Brilliant Corners is a 1957 studio album by American jazz pianist Thelonious Monk. It was his third album for Riverside Records, and his first on the label to include his own compositions. Brilliant Corners was recorded across three sessions in October and December 1956 with two different quintets. "Ba-lue Bolivar Ba-lues-Are" and "Pannonica", the latter featuring Monk playing celesta, were recorded on October 9 with saxophonists Ernie Henry and Sonny Rollins, bassist Oscar Pettiford, and drummer Max Roach. The former composition was titled as a phonetic rendering of Monk's exaggerated pronunciation of "Blue Bolivar Blues"; this referred to the Bolivar Hotel in Manhattan, where heiress and jazz patron Pannonica de Koenigswarter resided. Record and sleeve are great.