The best alternatives to Vampr for Android are Encore Music, Whyd for iOS, and Bandhub. If these 3 options don't work for you, we've listed a few more alternatives below.
OpenMicLtd is a matchmaking platform for individuals in the music industry to connect with one another. Each user will be able to create a profile where they are able to post photos/videos/songs and communicate with other users on the app.