Back in June, SPIN published The 30 Best Albums of 2021 (So Far), rounding up everything from mainstream rock to experimental hip-hop. Six months later, we’re back with our year-end recap — and it’s interesting how, even though the stylistic balance has stayed consistent, the picks themselves haven’t. While this list also covers a lot of ground, only six of those earlier records wound up in our final tally. Below, you’ll find massive R&B collaborations (Silk Sonic), trendy pop breakouts (Olivia Rodrigo), big-ticket indie-rock (The War on Drugs), prog-metal giants (Mastodon), and acclaimed indie-rap (Benny the Butcher & Harry Fraud). Looking back at Pandemic Year Number Two, when the music industry forecast seemed to shift on a daily basis, perhaps these changes are only fittin...