It was fun to look for songs about "feeling blue" or "Blau sein" (being drunk) and everything in between :EruSmile:
As always, here's the list with non-german songs and the other one follows after this.
Frank Popp Ensemble - Hip Teens Don't Wear Blue Jeans
https://youtu.be/n5kRnxF6bxQ?si=FfD4ib_VjsAIrM6L
MARINA - Blue
https://youtu.be/gDr7aTfBffU?si=3e06t6JGa-GpQ1rT
ATARASHII GAKKO - OTONABLUE
https://youtu.be/l446hUqQ7GY?si=_nahlUy4M_g6cAMm
Giant Rooks - Morning Blue
https://youtu.be/WBISefTOBhs?si=nWrv9m4_HiG770dU
LE SSERAFIM - Eve, Psyche & The bluebeard's wife
https://youtu.be/dZs_cLHfnNA?si=cXrbrlU6sLRJ2KeU