Among his most recent works are the Concertino for Oboe, English Horn and String Orchestra, commissioned by oboist Lise Glaser in 2009. Rivers’ orchestral tone poem, Echoes of War-Visions of Peace, commissioned and premiered by the Signature Symphony of Tulsa, was recorded by the Czech Philharmonic under the direction of Robert Winstin for inclusion on Volume 15 of ERMMedia Masterworks of the New Era CD series. He composed his