<Tr> <Th_colspan="2"> Spanish version single cover </Th> </Tr> <Tr> <Td_colspan="2"> Spanish title: "Estoy soñando" ("I'm Dreaming") </Td> </Tr> <P> "I Have a Dream" is a song by Swedish pop group ABBA . It was featured on the group's sixth studio album Voulez - Vous and released as a single in December 1979 . The single became a big hit, topping the charts in many countries and peaking at No. 2 in the UK over the Christmas week of 1979 . Twenty years later, Irish pop group Westlife released a version of the song which reached No. 1 in the UK over the Christmas week of 1999 . </P> <P> The song was written by Benny Andersson and Bjorn Ulvaeus and was taken from the group's 1979 album, Voulez - Vous . Anni - Frid Lyngstad sang the lead vocals . It was released as a single in December 1979 with a live version of "Take a Chance on Me" as the B - side . The recording is notable for being the only ABBA song to include vocalists other than the four band members; the final chorus features a children's choir from the International School of Stockholm . In the UK, "I Have a Dream" was held off the No. 1 spot by Pink Floyd's "Another Brick in the Wall" which also features a children's choir . "I Have a Dream" is included on the ABBA Gold: Greatest Hits album, as well as in the Mamma Mia! musical . </P>

Who sang the song i had a dream