what i remember is that it’s a german movie in which a boy and a girl are neighbors and complete opposites. the boy is in a punk band and the girl is a lowkey hippie. i know he writes a rude song about her and then she joins the band because his guitarist broke his fingers. i have no idea what the title is.
Systemfehler – Wenn Inge tanzt (2013)?
https://www.imdb.com/title/tt2446786/?ref_=ttkw_kw_tt