My Music Library

[Feisty49]

I've got a few questions, and if there are too many or you are shaking your head, I understand.  I set up Echo yesterday and love it already because it plays music I want at the sound of my voice.  Questions:

Without my asking/telling it to do, there are dozens of albums/songs listed in the Purchased line under the Playlists tab in My Music Library. I have purchased no music and there are a few artists/albums I've never heard of.  How did they get there?  Also, because I am a "housekeeper" of my life, can I delete them?    Actually, the same is true for all the tabs across:  Artists, Albums, Songs, Genres. 

Some of them are songs I've asked Echo to play, but I haven't asked it to play hundreds of songs, and as I said, I've purchased nothing. 

Also, the ability to save add a song to the line Recently Added has gone away.   I added one song yesterday and am unable to do it again.

Thanks for any info you can provide!