VoiceText for Slack - Voice notes w/ transcription in Slack
Flowkey - The easiest way to learn piano with your iPhone or iPad
Einote - Einote is a Chrome extension that allows Internet users to take notes on the fly with their voice right from any webpage.
Yousician - Learn to play music at home, at your own pace
Phonic.ai - Phonic is the easiest way to collect audio or video in an online survey. Designed for market research teams, startups and academic researchers.
Melodics - Melodics is a desktop app that teaches you to play MIDI keyboards, pad controllers, and drums.