Figure - Propellerhead creates world-class software products and services that inspire music makers and provide the foundation for a worldwide creative musical community.
Music Memos by Apple - An app to capture your song ideas
keezy - A colorful soundboard. Play with music.
Memo.ai - Simple and elegant notes app on your Mac
Splice - Music creation, collaboration, and sharing made simple.
Better Notes - Simple notes app that ties notes together with #hashtags