Where is my music

A

AC Question

I've had an HTC m8 for a few years and it was great. It was broke. And now I have a Google pixel. I signed into my amazon account and downloaded all my songs onto my new phone.problem is, I don't know where the music was stored. On my HTC there was a separate app to listen to music and I can't find one on this phone. Also is there a place I can view my pictures? Like my gallery? Also! How do I use my own music as ringtone and alarm? It wont let me do that either. So far, I'm not loving this phone.