Language learning isn’t just memorizing wordlists or grammar drills but also understanding a new culture.  Here are a bunch of music to get you started.

German:
RadioGoethe  – Plays various styles of German musik.
Chinese:
MandarinRadio   –  Chinese pop music.\
Japanese:
KawaiiRadio  –  Jpop
Japan A Radio  – Various types of Japanese music.

Let me know of more bands to add to the list.