I installed musixmatch two years ago. I didn't thought this application would be so amazing and precious for me. This application has everything. It has lyrics, it has mesmerising equaliser it has just everything.
Regarding concept, it is just tremendous. It'll search for a while for lyrics and will show you ever thing about https://lyrics. This application is so vast that you can use it for lyrics, music that too with better quality. Even it can recognise sound and will tell you which song this is.
About design, design is pretty cool. But it works little slower. It responds little slower comparing to other music applications. Also you can get points by responding to lyrics etc.
It has many great features like translating lyrics to any language. You can synchronise lyrics too. Editing song information. It has too many ads by which you'll be intercepted but not always some times. Despite this, this is the best music application so far for me.
This application is very much useful looking towards https://lyrics. You'll get maximum lyrics here and even translation too.