Dean and Metallica
Dean was born in 1979, which puts him in Generation X. Even though he is technically at the tail end of this generation (generations are not decided by birth years; I will die on this hill), his personal experience would have been more typical of the middle of the generation. It's generally accepted that music taste develops in adolescence and early adulthood, around 12-25.
Many of the bands we see as Dean's favorites were at the peak of their popularity in the mid-70s to early 80's. This would include Led Zepplin, AC/DC, Black Sabbath, Kansas, Lenard Skynard, and Blue Oyster Cult, which are all of the classic rock variety. Still, there is also Iron Maiden, Motörhead, and Def Leppard, which are more hard rock moving into metal categories. All of these bands have their most popular albums, which come out from anywhere between 1974 and 1984, which would make Dean around 6 years old. Suggesting that these are the bands that John may have listened to.
However, Metallic is also one of Dean's favorite bands. Metallica was formed in 1981, and their first 5 albums were extremely popular from 1883 to 1991. The black album, or their self-titled, came out in 1991, meaning Dean would have been 12, right around the time people developed their music tastes.
We don't see Dean enjoying much of the popular Gen X music, such as any of the prominent grunge bands: Nirvana , Peral Jam, or Alice In Chains . Alt-rock, such as Weezer, Green Day, REM, and Rage Against the Machine. Other metal bands popular in the 90s include Mega Death, Pantera, Slayer, and Anthrax. We see evidence of glam metal through the fake names they use and bands like Warrant, Kiss, Mötley Crüe, and Poison, but it's minor.
Metallica is well known for popularizing the thrash metal genre, which began to develop in the early 80's. Many elements that categorized the genre come from punk and hard rock of the late 70's and 80's. Eventually, moving into more of a hard rock style with the black album and later albums. Many of their influences include classic and hard rock bands of the 70s, all of which have been mentioned. All to say that Metallica was new in the 80s and "underground" and would have been popular among teens rather than adults who liked rock.
John, an enjoyer of typical "classic" rock, would have likely found Metallica too fast and chaotic. Dean, being 12 when The Black album came out, would have likely found it on his own (though other kids or just listening to the radio) and began developing an interest in Metallica. John and Dean likely would have fought about it due to John not liking it, the pushback of normal adolescents' developmental stage, and the sense of self-development.
Enter Sandman and Some Kind of Monster are referenced/played in the show. Enter Sandman is the top track from Metallica and was released in 1991 on the black album. Some Kind of Monster is from their 2003 album St. Anger.
This was a lot to say that Metallica sticks WAY out from many of the other bands Deans enjoys. To me, it appears something HE chose to listen to vs. what John listened to. Metalica's lyrics often address addiction, war with anti-war statements, religion, and mental health.
I suggest listening to Dean's favorite Led Zeppelin song, "Ramble On," against any Metallica song. Some of the top ones are "Enter Sandman," "Master of Puppets," "Some Kind of Monster," and "One."
Most of this is pulled from my head, from what I know from my parents, my history of rock and roll class I took 4 years ago, and some minor googling. PLZ share any other thoughts you all have. I'd love to hear them!

















