Coolio was working with Christy Dignam and was gearing up to release music with the Aslan star.
The late rapper, whose real name is Artis Levon Ivey Jr, passed away on Wednesday at age 59. Coolio previously revealed that he was working on new music with Christy, saying in July that they "just got into it".
He revealed in an interview with The Irish Examiner: "We're working on a track. We haven't even started writing any lyrics. The track is being built as we speak. Somewhere within the next four to six weeks we should have something tangible we could work with.