What do the AI tools in Logic Pro and GarageBand actually play for you?

Open a fresh Logic Pro project, draw a chord track with four chords, and add three Session Players: a drummer, an electric bass player and a piano player. Press play. Within a minute you have something that sounds like a rhythm section in a rehearsal room, locked to your chords, with fills where a drummer would put fills. Then look one lane down. The vocal track is empty, and the text file where the words should be is empty too.

That is the honest shape of Apple's AI tools in 2026. They play the band for you, and they play it well. They do not write a line of lyric, they do not compose the melody a singer would carry, and they do not sing. This page goes through what each tool in Logic Pro and GarageBand actually does, where each one stops, and what to use for the two missing pieces.

The short version, in one table

Everything below was checked against Apple's own product pages and release notes at the time of writing. Feature names change between versions, so treat this as a map of the current release, not a permanent list.

Read the right-hand column top to bottom and a pattern shows up. Nothing in it says "lyrics" or "vocal". Apple's Logic Pro page, at the time of writing, does not describe any lyric writing or singing feature at all.

Logic Pro: a rhythm section that follows the chord track

The Session Players are the centre of Logic's AI story. Logic Pro 11 added a Bass Player and a Keyboard Player next to the long-standing Drummer, and Apple's release notes describe them as a set that responds to your direction. Logic Pro 12, released with the Apple Creator Studio subscription in January 2026, added a fourth kind: the Synth Player, which generates synth bass and chordal synth parts and, according to Apple's announcement, can drive third-party Audio Unit instruments or an external hardware synth.

What ties them together is the chord track. You put chords in it, and every Session Player reads from it. That is also where Chord ID comes in: drag an audio or MIDI region onto the chord track and Logic works out the progression for you. Record a guitar idea as a voice memo, import it, and the bass player is following those chords a few seconds later.

This is a real change in how fast a sketch turns into an arrangement. It is also a very specific kind of help. Every one of these players accompanies. They need chords to exist before they can play, and they play underneath something. The thing on top, the line a person sings, is not in their job description.

If you are not on a Mac or an iPad, none of this is available to you. Readers on Windows or a Chromebook, or anyone who wants a free tool that runs in a browser, should read what BandLab's AI tools do and where they stop, which goes through the same question for BandLab. This page is for people who already have Logic or GarageBand open and want to know what is left to do. If your DAW is Ableton Live, the Ableton version of this question covers its built-in tools and plug-ins.

The tools that work on audio you already have

Stem Splitter takes a stereo file and pulls it apart. At launch it separated vocals, drums, bass and "other"; Logic Pro 11.2 added guitar and piano, plus a submix option for things like an instrumental or an a cappella. Apple's release notes say it needs a Mac with Apple silicon, and the guitar and piano stems need an M1 chip or later. If you want to know what kind of model sits under splitters in general and how they compare, the stem splitter breakdown covers that ground.

ChromaGlow is saturation: five models built to emulate vintage analog hardware, also Apple silicon only. Mastering Assistant analyses your mix and applies mastering processing you can adjust, and since Logic Pro 11 the analysis can run in real time.

All three are finishing tools. They make a recording sound better or give you parts of it to rework. None of them creates a song that was not there.

What it costs

At the time of writing, Apple sells Logic Pro for Mac as a one-time App Store purchase at $199.99, or as part of the Apple Creator Studio subscription at $12.99 a month or $129 a year, which also includes Final Cut Pro and Pixelmator Pro. Logic Pro for iPad is subscription only. Check Apple's page before buying, since bundles and prices change.

GarageBand: free, and the session player is the drummer

GarageBand costs nothing on Mac, iPhone and iPad, and it shares a lot of DNA with Logic. The AI-style feature it shares is Drummer: a set of virtual drummers and percussionists, created, in Apple's words, using top session drummers and recording engineers, that follow a few performance controls. Each player, by Apple's count, can perform over a million groove and fill combinations. The Mac App Store listing, at the time of writing, says 33 players; Apple's Mac product page counts 28 drummers and three percussionists. Either way, it is about thirty.

What GarageBand does not have, going by Apple's pages: the bass, keyboard and synth Session Players, Chord ID, Stem Splitter or Mastering Assistant. Those are Logic features.

On iPhone and iPad, GarageBand has a different kind of helper. Smart Instruments let you tap a chord and have the app strum it on guitar, play a bass part, or run a full string section, and autoplay patterns keep going while you hold the chord. Live Loops lets you trigger loop cells from a grid like a sampler. It is fast and it is fun on a bus, and it produces the same thing Logic does at a smaller scale: an accompaniment.

On the Mac, Flex Time and Groove Track fix timing after you play. Those are corrections to a performance, not generation.

What none of it does

Put the two apps side by side and the gap is the same in both:

Logic Pro / GarageBand will:      play drums, bass, keys, synth
                                  read chords from a recording
                                  split a mix into stems
                                  saturate and master

Logic Pro / GarageBand will not:  write the words
                                  decide what the song is about
                                  compose the sung melody
                                  sing

That list is not a criticism. A DAW is a studio, and a studio has never written the song. But it is exactly where people get stuck. You have eight bars that groove, you loop them for an hour, and the project folder fills with "idea_final_3" files that never get a vocal, because the hard part was always the words and the voice.

Filling the first gap: the words

You have three honest options. Write them yourself, which is the best one if you can and want to. Work with a lyricist. Or use a lyric generator to get a full draft you then edit.

That last one is where sunomarket fits, and only there. sunomarket.com is an independent site, not part of Apple or Suno and not affiliated with either. The song generator takes a short form and returns a title and a full lyric with section tags. It does not make audio, and it does not touch your Logic project.

A brief that matches the instrumental you just built might look like this:

language   en
structure  classic
hook       title-line
POV        first
emotion    longing
vocal      female
age        25-34
theme      Night-shift nurse driving home at dawn. She has his number
           ready and never presses call. The radio fills the silence.

What comes back is a title and tagged sections. Here is an illustrative fragment in that shape, written for this page rather than copied from a saved generation:

Before the Sun Gets Up

[Verse 1]
Badge on the dashboard, twelve hours done
Every light on Fourth Street blinking one by one
I had your number on the tip of my thumb
Then the radio played and I let it run

[Chorus]
Before the sun gets up I'm almost brave
Almost say the words I never gave
Then the morning finds me just the same
Before the sun gets up I say your name

One generation on the SM1 model costs 20 credits, which is $0.20. SM2 and SM3 cost 80 credits ($0.80) and run an extra editing pass: a detector flags weak lines and a repair step rewrites them. There is no free trial of the lyric generator; new accounts start at zero credits. Plans are on the pricing page: $5 a month gives 500 credits, or $19 once gives 1 500 credits that do not expire.

Make the tags and the arrangement agree

The useful habit here costs nothing. Name your Logic arrangement markers the same way the lyric is tagged: Intro, Verse 1, Chorus, Verse 2, and so on. Then you can see, bar by bar, where each block of words has to land, and you will notice immediately if your verse is eight bars and the lyric's verse wants twelve. Cut lines or extend the section; do it before anyone sings. If you are unsure how many sections a song needs or which tags Suno respects, the song structure guide lists them.

Filling the second gap: the voice

This is the bigger problem, because a lyric on a page is still silent.

Sing it yourself. Logic is built for this, and your own voice belongs to you without any terms of service in the way. If you hate your voice, record a guide anyway: it fixes the melody, and you can replace the singer later.

Hire a singer. Send the instrumental, the lyric and a rough guide. Slower and more expensive, and still the route most released records take.

Use an AI singer. The most direct way to put an AI vocal on a Logic instrumental is Suno's Add Vocals feature. According to Suno's help centre at the time of writing, you upload an instrumental, open the remix menu, choose Add Vocals, paste your lyrics and create. An Audio Strength slider in the advanced options controls how closely the result follows your upload, and Suno recommends describing the existing instrumental in the Style box. The same page lists the feature as a beta for Pro and Premier subscribers only, so check the current plan details on Suno's site before you count on it.

Two practical warnings. First, the result is a new render, not your Logic session with a vocal laid on top: depending on the Audio Strength setting, Suno can rework the backing. Second, the timing will not necessarily match your project. Both are fixable inside Logic, which is where the loop closes:

1. Logic:  build the instrumental with Session Players, bounce a stereo file
2. Suno:   upload it, Add Vocals, paste the tagged lyric, describe the style
3. Logic:  import the Suno render, run Stem Splitter, keep the vocal stem
4. Logic:  align it with Smart Tempo, mute Suno's backing, keep your own players

You end up with your own arrangement, your own mix decisions and an AI vocal as a topline sketch. A stem split from a mixed render will carry some bleed, so treat it as a demo or a reference for a real singer, not a clean studio take.

For describing your instrumental in Suno's Style box, the vocabulary matters more than the length. The style catalogue has nearly 2 000 styles written in the terms Suno responds to, and the recipes for the 10 most popular are free to read. If you want a choice of AI vocal approaches beyond Suno, AI vocalists for producers compares them from a producer's side.

A note on rights, because it comes up the moment a vocal is AI-generated: what you may do with a Suno render depends on your Suno plan and Suno's own terms, and the law on AI-generated audio differs by country. This is not legal advice. Our own position on generator output is on the disclaimer page, and who owns AI-generated music goes through the open questions.

Which setup fits which person

The pattern in that table is the reason this article exists. Apple has made the band nearly free to produce if you own a Mac. The words and the voice did not get easier at the same speed.

A twenty-minute session to try tonight

1. In Logic, add a chord track. Either type four chords or drag in a voice memo and let Chord ID read it.
2. Add three Session Players: drummer, bass, piano or Synth Player. Leave the defaults for the first pass.
3. Add arrangement markers: Intro, Verse 1, Chorus, Verse 2, Chorus, Outro. Give each Session Player region a section so the parts change where the song changes.
4. Fill in the brief at the song generator with one real image in the theme field, not a mood word. Pick SM1 for a first draft.
5. Paste the lyric into a note next to the project and check each tagged block against its marker. Cut lines where a section is too short.
6. Bounce the instrumental. Either sing a rough guide over it now, or take it to Suno's Add Vocals and bring the result back through Stem Splitter.

The drums were the easy part. They always were. Spend the twenty minutes on the words.