A very APPEALING puzzle for a Monday, that played hard for this early. It's all those sections of chunky words in the corners. And when I didn't get 1A: Bills and coins (CASH) [I'll give it a C+], it took a little longer than expected. My first entry I believed in was ION, but having put in Swarm in for STING, I had to move on. Fortunately SAGA and STAN soon put me right.
So. Four fruits or vegetables you can peel, in standard phrases. All of the phrases are solid, and the revealer is cute. But I'm a big fan of the fill in this puzzle, which is impressive given the five theme answers.
1D: Like rock music from the 1950s-'70s, now (CLASSIC) is fine, although I think most of the radio stations that specialize in this music include 1980s music as well, such as U2, The Police, REM. We used to consider that stuff alternative. I personally am working on my STAMINA as I train for sprint triathlon.
AMINOR and VIOLIN are symmetrically placed, which is nice, considering how common the key is for stringed instruments. There's a Bach violin concerto, as well as the wonderful Dvorak violin concerto. Also, Brahms' double concerto for violin and cello. His last symphonic work! Ahhhh... Brahms. I could listen to his music all day. And I have.
BAREBONES is great. And 40D: Bring home the bacon, so to speak (PROVIDE) is good, because bacon, am I right? Although I don't think the clue really needs that "so to speak".
Anyway, I enjoyed it.