A sentence

It appears to be talking about a song called 'Fine Line', possibly within the context of a musical, which has a piano bit that sounds a bit like Lady Madonna, a Beatles song, in some way.

This sentence is about music. It's comparing two songs -- "Fine Line" and "Lady Madonna." It says that the piano music in the songs are similar. "Bounces along" means that the song "Fine Line" is something easy to dance to; that the music is bouncy.

"The opener," means that the song "Fine Line" is the first song on the recording medium (CD, audiotape, whatever).

Hope that helps.