Alicia Keys has revealed she almost gave her song ‘If I Ain’t Got You’ to Christina Aguilera before it became one of her signature records.Speaking in a new interview, the Grammy Award-winning singer-songwriter discussed her time working with Aguilera on the pop star’s 2002 album ‘Stripped’.“She reached out and was like, ‘Would you write something for me?’ And then it came through so many emails. What a voice! I know I could write something fire for her,” Keys told Stereogum.“So time passed and