My husband is also incredibly difficult to shop for (though he thinks he isn't

), so I actually had to ask him before I bought him his Christmas gift this year. This it out of the price range but I'll throw it out there anyway, he enjoys Star Wars but also enjoys cooking, so I got him the Darth Vader Insta-Pot from Willaims-Sonoma along with a Gryffindor spatula (but they do have other
Star Wars items within the price range).
Other options, TeePublic or any of those t-shirt websites might be great to pick up a tee or two that are a little bit different than the common ones you find in store, and they range every possible fandom, which is super helpful.
For the music part, depending on the music, that could be an easy instrument (ukulele, flute, harmonica) along with books on learning to play or sheet music. Otherwise you can find some really nice music related t-shirts on TeePublic/RedBubble/TeeFury.
Coffee, I'd say you can get him some beans from a really nice coffee shop; or look out of state. One of my husband's cousins love when we pass along his old fav from
Blue Bottle or
Philz, but you can stick to local spots (I only shared those because they are the ones most requested when we visit or have visitors). I'll throw out a mention for
Joffrey's since they carry Disney blends along with their own blends. Another option could be a coffee subscription box as well.