My friend Robin (known as Inhuman on this board) has almost the same musical taste as me. We introduce bands to each other constantly.
Same thing with his brothers, who are also good friends.
My younger brother is mostly into genera rock music, but I've played Dino Jr, Pavement, Diamond Head, Stooges, Sonic Youth, the Melvins near him, and he doesn't mind it, he even likes some of it (he liked Pavement's guitar style).
My older brother.....he's 23 and still listens to shit I got over after high school. His loves stuff like Linkin Park and Blink 182(whom I have criticised in front of him), techno, general classic rock (the hits of AC/DC, Led Zeppelin, the Doors), and some hip-hop. He saw RUSH live not that long ago, and he was raving about how great the drummer is, but whenever I talk about my music, he brushes it off. I showed him the video for Dino Jr's "Freak Scene", and he thought it sucked, same with a Gang of Four video (he is a fan of RHCP btw). I was talking to him about my favourite bands one night, but he stopped me and went "please...I bet Linkin Park make WAYYY more money than all of your bands combined." and he said that as if it was a legitimate criticism. He thinks avant-garde anything is nonsense.
His other friends are the same way (but are more intrigued by my knowledge of music), and he has a few friends who are into punk and hardcore.
Another friend plays classical instruments (clarinet and some other ones), but I don't know about his musical tastes as much.
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