The Birdhouse - Reach the big Bird

[Butchi]

Sorry for this dumb Question, but i really cant reach the big Bird in the "The Birdhouse" Level. I stand on a Platform and see him ... but there is no way, i can reach this big bird (who listen to music).

Try the Jumps and Double Jumps - but no luck...

can anyone give an advice?

[Tim Timsen]

There's a horn you have to blow first.