I've gotten about 10 hits of 12, with such diverse things as "Bella Ciao" (Italian song), "Space Oddity" (the first few bars are practically a monotone), the Pi

I've gotten about 10 hits of 12, with such diverse things as "Bella Ciao" (Italian song), "Space Oddity" (the first few bars are practically a monotone), the Pink Panther (no words) and Kalasnjikov by Bregovic (random Serbian (?) words that I don't know). It got MGMT's Kids no problem, and I know I sung out out of tune. I'm very impressed. I found out worked better if I use "doo dee doo dee doo" rather than humming.