Everybody's Changing came from Keane's number album Hopes and Fears
Rock band Keane have said that the Conservative Party did not seek their permission to use one of their hits at their election manifesto launch.
Band member Richard Hughes wrote on Twitter he was "horrified" to hear 2004 song Everybody's Changing played.
David Bowie's song Changes was also played at the Tory launch.
Bands including Heart took legal action during the 2008 US presidential campaign after their songs were used at Republican events without consent.
Jackson Browne and Bon Jovi also expressed their disapproval over their use of their music for political campaigning.
Browne later received a letter of apology from Republican presidential candidate John McCain for using his song Running on Empty in a campaign advert.
A Conservative spokesman said: "It's a great song and David's a great fan".