Music Memos by Apple - An app to capture your song ideas
Music on Vine - Vine, now with music. Make 6-second music videos.
Bandlab - Capture, nurture, and collaborate on song ideas in the cloud
Storybeat - Storybeat app comes up with features to help you in changing the background music of your videos in a few simple steps to share your favorite moments with your social media friends.
DeepJ - AI-composed piano music in real time
Wiggle - Make Awesome Selfie Music Videos