I’m always interested in bands that sport t-shirts of other bands. These semi-subliminal shout-outs indicate (a) that this band (or at least the member in the shirt) is a fan; and (b) an endorsement of said band and thus an exhortation for others to check them out.
Dave Grohl used to be one to watch for this sort of thing. His wearing of a Hellacopters t-shirt led me to a very fine Swedish band that had to that point escaped my attention.
Damon Albarn’s professing of his love of krautrock (a particular kind of German alt-rock) in interviews sent me down a rabbit hole that included groups like Neu.
And here’s a real 21st-century situation. Damon Blur turned me onto Neu, which sent me to a Spotify playlist featuring the band, which in turn recommended a Chilean band called Follakzoid.
Any connections you want to share? Let me know.