Professor Danielle George demonstrates what feedback loops are by asking a child to match the note that she plays on a swanee whistle. She explains how the child must listen to the note and adjust ...

For blowing instruments, the swanee whistle or slide whistle has a mouthpiece - like a penny whistle - and also a special plunger, which is pulled and pushed to make the pitch higher or lower.

Diego Brown and the Good Fairy is an eclectic duo with unusual vocals and clever lyrics, backed by kazoo, swanee whistle, accordion, melodica, bicycle wheel (!) and guitar. Serving up a ...