It looked difficult and devious, but was surprised, a good grid [but admit I did not get ccss, wd ty

Nice grid. Managed 7/10 as couldn’t guess the Aquarium group. I should have recognised it from my school days as I can hear it even now.

Some obscure French composer? Seriously?

Why not include the bloke who plays fiddle in my local pub?

@Nothappy. Ha, I get where you’re coming from as I feel the same about video game connections of which I know nothing, but I think this suite by the composer is quite commonly known as I studied it at school. If you google and play Aquarium you might recognise it.

@ nothappy: Saint Saens an obscure composer? Better educate yourself.

The Saint Saens was not going to be guessed by many, including me. The other 3 took seconds to put together, No real red herrings.
And, Nothappy apparently skipped music class that day. We can likely presume that Berlioz and Debussy also qualify as obscure.
Thank you for indeed not including Pacman, Mario Bros, or comic book superheroes in any groups, as well as omitting soccer players.