Speaking of Disco...
Driving back to SJ from my folks' in Alameda Sunday night, we were listening to "Sunday Night Oldies w/ Tony Sandoval" on KISS-FM 98.1. After listening to a fair amount of hits from the 70s, my six-year old states "My drum kit doesn't have a hi-hat."
(He's got a starter drum kit w/ a tom-tom, snare, and cymbal.)
Sharp one, that kid. He learned about hi-hats from Sesame Street, when Murray and his Ovejita went to drum school, of course.
We then proceeded to point out the hi-hat in every single song until we got home.