Katie Kissoon

Mac and Katie Kissoon made their first collaborative recording covering the Lally Stott song "Chirpy Chirpy Cheep Cheep" for the UK market. Released July 1971, the Kissoons' version of "Chirpy Chirpy Cheep Cheep" lost out in the UK to another cover by Middle of the Road, who scored a number 1 hit in the UK Singles chart, while the Kissoons' recording stalled at number 41. However, a parallel release of the Kissoons' version of "Chirpy Chirpy Cheep Cheep" in the U.S. became a hit, with the single reaching number 20 on the Billboard Hot 100 in October 1971.

Mac and Katie Kissoon continued to record together, and although their follow-up single to "Chirpy Chirpy Cheep Cheep", "Freedom", failed to chart in either the UK or U.S., the track charted throughout Europe, with estimated sales approaching one million units. Neil Sedaka released "Love Will Keep Us Together" in 1973, and Mac & Katie Kissoon covered the song that year, with a U.S. release in 1974. Captain & Tennille also covered the song in 1975, which became a worldwide hit. The Kissoons continued to have European chart success, particularly in the Netherlands and on the Belgian Dutch-language chart, and finally broke through in the UK in 1975 when "Sugar Candy Kisses" reached number 3.

In 1979 and 1980, Mac Kissoon had three solo hits in the Netherlands, including "Lavender Blue" and "Love and Understanding", both reaching the Top 10.

Their pop soul music career having receded by the early 1980s, Katie and Mac Kissoon were in demand as backing singers and session musicians. Katie was a member of James Last's singers in the 1980s, her brother Mac continuing there until Last's death. Katie Kissoon's career as backing singer has continued with Van Morrison (1978 and later), Elkie Brooks (1982), Eric Clapton (1986 and later), Roger Waters (since 1984), Elton John (1985), Eros Ramazzotti (1990), George Harrison (1991), Big Country (1991), Pet Shop Boys (1994), George Michael (Unplugged on MTV 1996), Robbie Williams (2000 and later), and Mark Knopfler (2018).