Start with the parts already in your session
The walkthrough begins with a Logic Pro track, its chords, and Session Players. Use that existing arrangement as the context for the missing layers you want to create. Keep your existing tracks in Logic Pro; enter the musical settings for the new parts in Music Agent.
Austin Yip's accompanying October 19 article describes a D-minor session with Dm–F–Am–C repeated, plus drums and bass guitar. That written example gives the musical context; the video chapters guide you through the published walkthrough.
Generate the missing parts with Music Agent
Enter your prompt, tempo, key, and take settings in Music Agent. For your own piece, use your chord progression and time signature to give the new parts the context of your session. Select Pad for sustained harmony and Arpeggiator for repeating movement around the chords.
The article describes selecting Arp, Pad, Bass, and FX. Choose the layers your arrangement needs. Each stem is generated independently, so audition the generated takes alongside the parts you already have and choose the combination that fits.
Download both WAV audio and editable MIDI
The download chapter shows both formats. WAV contains the rendered sound; MIDI carries editable performance information you can use with an instrument in your DAW.
Import the stems into Logic Pro and place them with the existing tracks. The next chapter layers the bass, then adds tempo-synced Echo to it.
Compare takes in the arrangement
The walkthrough compares two arpeggiator takes and later two pad takes. Listen to each in the context of the track before choosing the part you want to keep.
Keep space for the existing instruments. You can adjust a part's level and entrance in Logic Pro as you compare the alternatives.
Use the MIDI with another instrument
At 2:37, the walkthrough uses Bovo MIDI with a synth sound. This lets you keep the performance information while choosing the instrument sound in Logic Pro.
Listen again after changing the instrument. MIDI playback depends on the sound and controls of the instrument you choose; use WAV when you want the rendered sound instead.
Balance the finished arrangement
The later chapters balance the arpeggiator with Channel EQ and create a curved fade-in. They also shape the pad's rise and ending, then trim the FX and add EQ and Echo.
Check the mix, headroom, and bounce settings before exporting the finished arrangement. The final chapter lets you hear the completed Logic Pro mix.
Try it yourself.
Keep the Pad spacious and let the Arpeggiator add gentle movement around the chords.
Select Pad and Arpeggiator. Enter your own chord progression, key, tempo, and time signature, then compare the independently generated takes in your Logic Pro arrangement. Choose WAV for the rendered sounds or MIDI for your own instruments.
Open Music Agent