Mono is a music discovery and playback app combining multiple sources into one experience. You get access to the entire world of artists, their releases, their top tracks and their media. You configure and prioritize music sources for playback, including your local files, Soundcloud, Subsonic and of course YouTube - either on your device or on Chromecast. You can also view artist bios, images, concerts and similar artists and build, save and share playlists easily. There are also many ways to automatically build playlists, from top tracks overall, by genre, by country, by tag as well as Last.fm, SoundCloud, Spotify & Billboard charts.

Permissions
- Contacts - we do NOT get or want access to your contacts but to use your registered emails on your device we need permission to read these account emails. Android categorizes this permission with Contacts, but rest assured we do not request access.
- Calendar - to post concerts
- Microphone - to speak text
- Location - to see concerts in the vicinity

Subsonic is supported for those of you that want to stream your own music. You will need to download the server onto your desktop/laptop (www.subsonic.org) and set it up with your music library.

Last, but by no means least, please provide feedback to [email protected], especially the negative and creative varieties. We know many of you are using the features successfully but there are a few users who cannot seem to even run the app at all. We have tested on many devices but not every one, so rather than just trashing the app please give us an opportunity to figure out why it won't run for you by sending device specs, ROM version, and as much information as possible as to what is happening. If we then fail to resolve the issue by all means trash it.

See the review on Tapscape

http://www.tapscape.com/mono-android-app-review/