This app was mentioned in 7 comments, with an average of 6.57 upvotes
tldr; open source music player with paid plug-ins for accessing proprietary music sources like Google Play Music.
https://play.google.com/store/apps/details?id=com.fastbootmobile.encore.app
encore music has a recognition feature but it isn't as accurate as shazam. the app is outdated too
https://play.google.com/store/apps/details?id=com.fastbootmobile.encore.app