drei hundert und sieben

What connects the two?

Rather,The man in the bottom, played 'X' in a psychological thriller named 'Y'.In 'X' the character name(his) was inspired by the guy on top :P

The guy on top 'Z' is a musician,heads a band,hes the sole permanent member of this band.

the music was written by him for this film which was later rejected ,was considered too cheesy ..

Id them.Band is just a clue..