| DEEELITE | '90s dance-pop trio whose "Groove"-y hit samples Herbie Hancock, a belly dancing record, and the theme from Green Acres |
| FRED | Dance-pop trio Right Said ___ |
| SHEILA | See picture clue: Dame ------ Hancock, A Discovery of Witches star (6) |
| JONASBROTHERS | Pop trio whose Like It's Christmas topped the Adult Contemporary chart in 2019: 2 wds. |
| SUGABABES | Pop trio whose hits include Red Dress (9) |
| ORDEROF | Novel and film, Harry Potter and the ... the Phoenix (5,2) |
| NIGHTAND | Gracie Fields sang You And The ... The Music (5,3) |
| TRANSISTOR | Rap artists covering One Direction on old Capital Records and the wireless (10) |
| FORTYFIVES | Nickname for old singles records...and the age cohort 12-Across joins today |
| HER | 1980s/90s dance music show with Pete Waterman and Michaela Strachan, The Hitman And ___ (3) |
| KANEGANG | English trio whose debut album yielded the 1984 hit singles Closest Thing to Heaven and Respect Yourself |
| BANANARAMA | Female trio whose hits in the '80s include Venus, Robert De Niro's Waiting and I Heard A Rumour (10) |
| NEWBEATS | Pop trio with the 1964 hit "Bread and Butter," with "the" |
| SCHUYLERSISTERS | "Hamilton" trio whose names appear at the beginning of this puzzle's theme entries |
| IMWITHHER | Folk trio whose name predates 2016, or a hint to two words contained in each starred clue's answer |
| ODYSSEY | American soul/disco trio whose debut hit was Native New Yorker in 1977 (7) |
| ZILL | Jingle of a tambourine; or, a hand cymbal used in belly-dancing (4) |
| STEPS | British dance pop quintet formed in 1997 whose first UK No 1 hit was Heartbeat/Tragedy (5) |
| SALTNPEPA | '90s female pop trio with the hits Push It and Shoop |
| RONETTES | 1960s pop trio in the Rock and Roll Hall of Fame, with "the" |
