Robert Wyatt´s solo release schedule is pretty relaxed, but he seems to be quite willing to join other people on their records.
Below are three Wyatt-related albums (I´m a bit late with one of them!), and don´t forget Get The Blessing.
Please study Une Discographie De Robert Wyatt, the place to visit when it comes to matters like this!
Dave Formula: "Satellite Sweetheart" (Wire-Sound 2010).
Wyatt with vocals and cornet on "The World Behind Your Eyes".
Philippe Barbot: "Point Barre" (Believe 2012).
Barbot is singing his own lyrics to the instrumental "Raining in my heart" from Robert Wyatt´s album "Cuckooland" (Hannibal 2003).
Grasscut: "Unearth" (NinjaTunes 2012).
Wyatt with vocals and cornet on the beautiful "Richardson Road".