Jermaine Jackson Although he scored two solo Top 10 hits on Billboard's Hot 100 (with 1973's "Daddy's Home" and 1979's Stevie Wonder-penned-and-produced "Let's Get Serious," both of which went to No. 9), seven Top 40 singles (including "Let Me Tickle Your Fancy," his 1982 No. 18 collaboration with Devo), and two R&B No. 1s, Michael's big brother remains arguably pop's second banana most deserving of more love.
Jane Wiedlin Every time I hear her lone solo success ("Rush Hour," which peaked at No. 9 in 1988), I imagine the Go-Go's rhythm guitarist (who co-wrote the all-female band's greatest -- as in best -- hit "Our Lips Are Sealed") somewhere, staring at a voodoo doll of Belinda Carlisle, shouting, "Belinda! Belinda! Belinda! Why not me, Lord?!"
Martha Wash She was the uncredited voice -- on record and in videos -- behind early '90s hits by Black Box ("Everybody Everybody," "I Don't Know Anybody Else," "Strike It Up" and "Fantasy") and C+C Music Factory (including the chart-topping "Gonna Make You Sweat") and also one-half (the still-living half) of The Weather Girls (formerly Two Tons O' Fun, who recorded the iconic 1982 gay club classic "It's Raining Men," a massive pop hit everywhere in the English-speaking world but, of course, the U.S., where it only sprinkled up to No. 46 on the Hot 100). Alas, to this day in mainstream circles, the ton o' fun who is arguably pop and R&B's greatest vocalist post-Aretha Franklin remains relatively unknown by her own name.
Darlene Love A major '60s backup and lead vocalist (the latter most notably on hits by The Crystals, including the 1962 No. 1 "He's A Rebel"), a TV and Broadway actress, and a 2011 inductee into the Rock and Roll Hall of Fame, Love, like Wash, has never gotten any chart love under her own name.
JC Chasez The male Kelly Rowland to 'N Sync's Justin Timberlake, he had the looks and the talent (arguably more of both than JT) and occasionally the collaborators (including Basement Jaxx, on whose 2003 Kish Kash track "Plug It In" Chasez sang lead), but not the material or the charisma to go as far.