The 33-year-old Irish star will release the album, When Ronan Met Burt, in time for Mother's Day in the UK next month.
It features some of Bacharach's best-known tracks such as Walk On By, The Look Of Love and I Just Don't Know What To Do With Myself.
Speaking about the collaboration, Keating said: 'It has been a dream come true to work with Burt. I grew up listening to his songs and it was an honour to sing them alongside the man himself.
'It's hard enough trying to do justice to such legendary tunes but to record them with the man himself was another level of pressure.'