The best alternatives to MMODM are Ocean beta, BEET, and Music Box Fun. If these 3 options don't work for you, we've listed a few more alternatives below.
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Ocean lifts the barriers that are often associated with electronic music-making & enable people to enjoy making music, exploring sounds and collaborating with people globally.
Think you can finger drum? Think again. BEET is the finger drumming game that puts your grooviness to the test. Play over 200 spicy beats designed by real producers.
A website for making and sharing music box songs. It's free to use and doesn't require an account to make and share songs (all song data is stored in the URL).