I mean come on Metallica is too obvious but they are my favorite Thrash metal especially their early albums

I would say also check out Metal Church namely the band title track, its their #1 for a reason, it's like one of the greatest Trash Metal songs I've ever heard!

Also I consider myself pretty knolegable about 70s music I would love to talk to you and your grandson about bands from this time period cuz its my favorite! On this note have either of u 2 listened to Remeber the Future by Nektar? If not its like the greatest thing I've ever heard they are my #1 of all time because of this album, its a master piece!!