Just watch those contest shows on TV - American Idol, The Voice US, UK, etc.
Most Korean university students have experienced singing rooms since their middle school or even primary school years.
Now there are shows in Korea such as Super Star K, the Voice Korea, etc. which students are into.
Whatever is popular on these shows the kids would know. Beyonce, Maroon 5 "Moves Like Jagger," anything by Bruno Mars, etc.
Most of us PS teachers teach Fool's Garden "Lemon Tree" so they might know that one.
Jamelia "Superstar" and Lighthouse Family "High" are really good.