There is not any strict sequence of steps in music composition, but if you are just starting, you can begin by adding some drums to your tune. It will create a basic structure of the future composition.
Try to hear a melody in your head or sing it first. Then start drawing it on the melody track canvas. Hit Play and listen while you are working on it. To make it more dynamic, use the velocity tool to adjust volume of individual notes.
In music, the process of adding chords to a melody is called harmonization. Tune Maker allows you to construct almost any possible chord and it will help you to find chords that mach your melody.
In Tune Maker, an arpeggio track is a rhythmic pattern for your chord progression. You can think of it as a right hand pattern when you play on a guitar. It can be like strumming, bass & chord or a single-note pattern. Tune Maker automatically maps this pattern to your chords and produces appropriate note pitches.
Enable recording and start playing on the note editor's scale buttons or use your MIDI controller connected over USB of Bluetooth. You can also record chords with your MIDI keyboard. Tune Maker will recognize chords you are playing and insert them into the chord track.
Select an instrument from the built-in collection. Play CoreMIDI-compatible apps. Or plug in any Audio Unit Extension Instrument available on the App Store.
You can duplicate an existing section and add some alterations to it or you can just repeat a section. For example, if you have some kind of chorus section in your song, you could repeat it in multiple places inside your song. And if you decide to modify this section later, the changes will affect all the repeats.
Tune Maker is a Document Based App. This allows you to organize your projects in the way that works best for you. You can store your projects on a local folder, on iCloud Drive, or on any other supported cloud storage like DropBox or GoogleDrive. You can share easily using AirDrop, Mail or Message. You can also export your project as a MIDI file if you want to continue working on it in a DAW like Ableton or GarageBand.