"Wonderful Tonight" is a song written by Eric Clapton. It was included on Clapton's 1977 album Slowhand but not released as a single until 1991. Clapton wrote the song about Pattie Boyd, and it is mentioned in her autobiographical book Wonderful Tonight: George Harrison, Eric Clapton, and Me. The song was a modest hit upon its release, charting at #16 Pop and #39 Adult Contemporary in the US and #30 in the UK. 
On September 7, 1976, Clapton wrote "Wonderful Tonight" for Boyd while waiting for her to get ready to attend Paul and Linda McCartney's annual Buddy Holly party. Of "Wonderful Tonight," Boyd would say: "For years it tore at me. To have inspired Eric, and George before him, to write such music was so flattering. 'Wonderful Tonight' was the most poignant reminder of all that was good in our relationship, and when things went wrong it was torture to hear it."
In 1988, Clapton appeared in the Nelson Mandela 70th Birthday Tribute concert as a guest guitarist for Dire Straits. The group became his backing musicians for a surprise performance of "Wonderful Tonight" during their set.
The song appeared in a 2005 SBC commercial.
In the season six finale of the American TV series Friends, after Chandler proposes to Monica, this song is used as the background music.
Now in 2012 P V Tanner has recorded a country version of this song