<Table> <Tr> <Td> "I Want You" (1987) </Td> <Td> "It Must Have Been Love (Christmas for the Broken Hearted)" (1987) </Td> <Td> "I Call Your Name" (1988) </Td> </Tr> </Table> <Tr> <Td> "I Want You" (1987) </Td> <Td> "It Must Have Been Love (Christmas for the Broken Hearted)" (1987) </Td> <Td> "I Call Your Name" (1988) </Td> </Tr> <P> "It Must Have Been Love" is a song written by Per Gessle and performed by the Swedish pop duo Roxette . The ballad became the duo's third number one hit in the United States, and is one of their best selling releases, being certified gold or platinum in a number of countries . </P> <P> Four different versions of the song have been officially released . The original 1987 track was followed by the most successful incarnation of the song, a slightly edited version--omitting the Christmas references--which was created for the soundtrack to the 1990 movie Pretty Woman . During the "Join the Joyride! World Tour" in 1991, the band recorded a country music version of the track in Los Angeles, which was included on their 1992 album Tourism . A Spanish - language version of the Pretty Woman recording was released on their 1996 compilation Baladas en español . Finally, an orchestral live performance from the band's 2009 concert at Night of the Proms was included on their 2012 studio album, Travelling . </P>

Who sang it must have been love in pretty woman