Curtis Stigers is an American jazz vocalist / saxophonist / guitarist / songwriter born on 18 October 1965 in Boise, Idaho, USA. He achieved a number of hits in the early 1990s, most notably "I Wonder Why", which reached #5 in the UK and #9 in the US in 1991. He is signed with Concord Records. He had his début self titled album in 1991 which sold 1.5 milllion. In his solo career, his most famous songs are 'I Wonder Why' and 'You're All That Matters To Me'.