"Don't Know Much" is a song written by Barry Mann, Cynthia Weil and Tom Snow. The original version of this song was recorded by Barry Mann in 1980 and was made famous when it was covered as a duet by Linda Ronstadt and Aaron Neville in 1989.

The single was certified Gold and eventually sold over 900,000 copies in the US alone. In the UK, the song peaked at #2 on the British pop chart. The song also hit #1 in Canada, Ireland, Australia, and several other countries. The song proved to be Ronstadt's tenth Billboard Top 10 Pop hit.

"Don't Know Much" won Ronstadt and Neville the 1990 Grammy Award for Best Pop Performance by a Duo or Group with Vocal and was nominated for Song of the Year.

More Info: en.wikipedia.org