Highlights in the career of singer Donna Summer, the Queen of Disco, who died Thursday at age 63:
_ 1975: Donna Summer releases her breakthrough song, "Love to Love You Baby." A sexy track punctuated with breathy sighs, it launched Summer's career and was the first of her 19 No. 1 dance hits.
_ 1979: Summer becomes the first woman to score four No. 1 singles in a single year: "MacArthur Park," "Hot Stuff," "Bad Girls" and "No More Tears" (with Barbra Streisand). Two of those _ "Hot Stuff" and "Bad Girls" _ were simultaneously in the Hot 100 Singles top 3, another first for a female singer. Summer also wins a Grammy award for female rock vocal for "Hot Stuff."
_ 1983: Summer returns to the top of the music charts with "She Works Hard for the Money." A track off of that album, "He's a Rebel," won a Grammy for best inspirational performance the following year.
_ 1997: Summer wins her fifth Grammy for "Carry On," a dance track that reunited her with producer Giorgio Moroder, her partner on her breakthrough hit.
_ 2008: "Crayons," Summer's first full studio album in 17 years, is released. The singer also performed on "American Idol" with its top female contestants.