Top 40 Hits of 1990 by ShampooCell

A trio from Lower Manhattan comprising Betty, Margie, and Sheila achieved their only #1 in September 1990. Known for uptempo freestyle dance tracks for the last few years of the '80s, it was their power ballad "If Wishes Came True" that unseated Mariah Carey's debut single "Vision Of Love" and secured them the top spot.

Name the group.

Name either artist who charted a Top 40 single in 1990 entitled "Heart Of Stone."

Name the vocal quartet who had a #2 hit with "Hold On," the debut single from their debut album Born To Sing.

Name the only Top 40 single by New York hip-house duo 2 In A Room, also a #1 on the dance chart.

Name the hair metal supergroup that included members of Styx and Night Ranger who had a #3 hit with "High Enough."

Speaking of hair metal, name the hard rock softies who hit it big with the power ballad "I'll See You In My Dreams."

Name the Canadian singer/songwriter and synthesist who, at age 23, barely missed the Top 40 with her debut single "Welcome To The Real World," but ran "Don't Wanna Fall In Love" up to #2 shortly thereafter.

Madonna's massive hit "Vogue" was a single released from the soundtrack of what movie?

The brother of what Academy-Award-winning actor peaked at #13 with the single "No Myth"?

Name the only single ever charted by Hollywood alternative rock band Concrete Blonde.

Give the stage name of Congolese-Belgian rapper Manuela Kamosi, most well known for her string of dance hits with German producers Technotronic.

The final question shall mirror the first: Name the artist who was known for uptempo freestyle dance music in the late '80s, but whose ballad "Because I Love You (The Postman Song)" became his first (and, to date, only) #1 hit.