The Don Ellis Orchestra was a jazz ensemble led by trumpeter and composer Don Ellis. Known for its innovative approach, the orchestra blended elements of jazz with classical music and world rhythms, creating a unique sound that set it apart from traditional big bands. The group gained popularity in the 1960s and 1970s, performing at various venues and festivals. Ellis was recognized for his use of unusual time signatures and complex arrangements, which challenged musicians and captivated audiences. The orchestra's performances often featured original compositions and arrangements, showcasing the talents of its members and contributing to the evolution of modern jazz.