Vinyl records shouldn't shatter easily when simply dropped onto the floor (when Tina accidentally drops three 45-RPM records and they break.) This usually only applies to the much older 78-RPM records, made of a more fragile shellac material instead of vinyl.
The song the animal orchestra played during the puppet show was "If You're Happy and You Know It".
We learn that Luci plays her guitar and Michael plays his cello.
Songs they sang:
"The Crocodile Song"
"Old Brass Wagon"
"I Am A Fine Musician"
"Everyone Is Special"