'I Turn to You' is one of the scores of hit songs written by Diane Warren (seriously, the woman must write in her sleep too). The original was recorded for the 1996 'Space Jam' film soundtrack by R&B quartet All-4-One, but the track didn't get much attention until Christina Aguilera covered it four years later.

The song was the third single to drop from Aguilera's eponymous debut disc, following 'Genie in a Bottle' and 'What a Girl Wants.' Released in April of 2000, 'I Turn to You' -- her first ballad -- peaked at No. 3 on the U.S. charts and became her album's third Top 10 hit. And even though it wasn't promoted internationally, it was still played heavily in places like Japan, Mexico, and throughout Europe, which helped the single sell almost 2 million copies worldwide.

Perhaps in recognition of some of those foreign listeners, Aguilera also later recorded the song in Spanish. Titled 'Por Siempre Tu,' it appeared on her first Spanish-language album, 'Mi Reflejo,' which was released in September of 2000.

Listen to Christina Aguilera's Version of 'I Turn to You'

Listen to All-4-One's Version of 'I Turn to You'