She began her career as a session singer in the music industry in London. She was the girlfriend of Steve Harley of Steve Harley & Cockney Rebel, and sang on the 1975 hit, "Make Me Smile (Come Up and See Me)". She also worked with Madeline Bell and Vicki Brown.
Most notably she performed as a duet with Scott Fitzgerald on the song "If I Had Words", which reached number 3 in the UK Singles Chart in 1978. It was also a hit in Australia, New Zealand, Belgium, the Netherlands and Scandinaviaand sold more than a million copies.
Keeley was part of the group the Star Sisters which was popular in the Netherlands during the 1980s.