"Genie in a Bottle" is a song by American singer Christina Aguilera from her self-titled debut album released in 1999. It was written and produced by Steve Kipner and David Frank, with additional writing from Pamela Sheyne. The song was released on June 22, 1999, by RCA Records as the album's lead single.
"If You Had My Love" is the debut single by American actress and singer Jennifer Lopez. The song was released in May 4, 1999 as the lead single from her debut album On the 6 (1999). It was written by Rodney Jerkins, LaShawn Daniels and Cory Rooney, with Jerkins also serving as producer.
"I Want It That Way" is a song by American boy band the Backstreet Boys. It was released on April 12, 1999, as the lead single from their third studio album, Millennium. It was written by Max Martin and Andreas Carlsson, while Martin and Kristian Lundin produced it.
"Scar Tissue" is the first single from the American rock band Red Hot Chili Peppers' seventh studio album Californication, released in 1999. It is one of their most successful songs, spending a then-record 16 consecutive weeks on top of the Billboard Hot Modern Rock Tracks chart, as well as 10 weeks at the top of the Billboard Mainstream Rock Tracks chart and reached number 8 on Billboard Hot 100 Airplay.
"The Hardest Thing" is the third single released by American boy band, 98 Degrees, from their second studio album, 98 Degrees and Rising (1998). "The Hardest Thing" peaked at #5 in the US and also experienced moderate success in Oceania, peaking at #24 on the Australian ARIA Singles Chart, and #5 on the New Zealand RIANZ Singles Chart.