Ok, so take two subjects and combine them, then tell us a little something about the resulting cross-breed.
For example. Say we cross the music genre Opera with Rap and we come up with a new style of Operapic music. Songs in the Operapic style would be called Ari-yeaaahs. Operapic performances would feature elaborate costumes, sets, and be performed in non-English languages, but with the speed and rythmic dynamics of rap concerts. And maybe auto tunes, it depends on if T-Pain crosses over.
The idea is to make a unique mash up of well known concepts.