That's an hi-hat... See, there's a pedal that you can press with your feet to close the hi hat (both cymbals touching, tight) if you let go (not completely), the hihat will open... the cymbals will be touching... not tight... that's why you'll hear a sizzle... Tssssssssssssss
*Sits down to drums*
ts ts ts tssssss ts ts ts ....
Boom boom ts bap tsssss bom boom boom tssss bap..
*Put sticks down leaves*