impossible to finish in the time ... wasn't crazy for the musical genres, particularly chamber (which I still don't understand) and can't get a couple of others even with the groups but a good effort

SPOILER ALERT
I always say there's no harm in having a second go- it's meant to be fun and no one is keeping score! 1/4 heart refers to the 4 quarters of the heart, the atria and ventricles, which are referred to as chambers.
I tried to include one giveaway clue per group to give you a thread to pull- heavy metal was the easy one in that group, I think.

Top gridding. 10/10

I thought you'd like this one! It's not for everyone, apparently!

I actually thought chamber was the easiest in the group.

Impossible in the time but an excellent grid

Now this is baffling! Great though

Clever and great fun - Puzzgrid and Cryptic crossword combined. Took 4 goes and still missed chamber, but who cares - thanks. Going to try one - won't be as good.

That's the spirit, Giggsy! Haters gonna hate...

Hey Lorna - I just tried to post one in this vein (tried it twice 24806 and 24809) and I can't get either to open. Never done 'longer' clues before so wondering what I might be doing wrong. Can you open either? (they are the same grid essentially) - thanks

Great fun (but impossible in 3 minutes!).

Hmmmm

Share the mixed feelings, very clever ... perhaps a bit too

My brilliant wife thought it was great and very enjoyable ... good brain work out and amusing *****

Much fun

Fab

love u lorna

a little more time would have made it perfect!

Quite brilliant

I regret my rating, I did it out of frustration. Puzzgrid.com please revoke my rating priviledges. I'm having post grid clarity. This was very well constructed, I let my emotions get the best of me, and for that, I'm truly sorry. I think it stems from a

Kohnnie, you are dumb

I agree with Tom and Lorna

Reviewed my rating, gave it the five stars it deserves. Kohnnie, I'm sorry for calling you dumb, that too was the result of my emotions getting the better of me. These things tend to happen on the internet. I'm sure that you are a very intelligent person. We puzzle enjoyers must stick together, and not sow division amongst ourselves. I will now take my leave. Farewell.

Loved this one! Hadn't seen your grids in a while. My fave!

Oh. I really enjoyed this one even though I did terribly. Very clever, mangoes really got me. I'm not sure pot ooo work as a complete clue for potatoes, the "at" in particular.

Actually there were so many brilliant ones that made me go, wow, that makes sense. My favourite grid in a while. Thank you so much for constructing it.

Brilliant...