Instruct: Classify an Amazon review as either positive or negative.
Query: The ultimate vocal album by Duke's orchestra

This is certainly the best studio recording by Duke's band accompanying a singer. Compared to the collaborations with Rosemary Clooney, Frank Sinatra or Ella herself in the Songbook series, the band sounds well-rehearsed. The arrangements are fresh and beautifully supportive, the selection of Ellington/Strayhorn songs is unique and I wish that more of Duke's lesser-known songs would get such an ideal treatment. The Ellington formation remains unequalled, but the great Ella makes each tune her own and lays proof to the fact that a)Duke was one of the best song-writers and that b)his compositions stand on their own. This is an essential Ella album!