White rappers, pioneers, punks, proto-hipster hippies…There are a lot of ways to describe the Beastie Boys, but perhaps none as fitting as “scientists of sound”—the moniker that has been placed on them since dropping their 1989 track “The Sounds of Science.” In their 20-plus years as recording artists, the trio of Ad Rock, MCA and Mike D have seen both critical acclaim and extraordinary commercial success, all while experimenting with genres ranging from punk rock to Jamaican dub yet still maintaining a decidedly old-school-rap aesthetic. However, on Hot Sauce Committee Part Two, their eighth studio album (and first with lyrics since ...