You mean like, newly acquired by Apple, Shazam, right? I use to use Shazam all the time when they had a link to Amazon Music, now . . . . I use it to get the title then ask Echo to play the song and then add it to my playlists.
So I want to know the same. I have heard that it can be done with an Echo BUT I have yet to find the magic words/code to do it.
P.S.
Shazam failed me 90% of the time anyway Apple can have it.