The title track is a version of the George Gershwin aria from the 1935 operaPorgy and Bess, though influenced by the Miles Davis jazz interpretation of the song.[1] It was released as a single in June 1971 with "Hurt So Bad" on the flip side, but it failed to chart.[2]
"Jerusalem", written by Alpert, and "Strike Up the Band", another Gershwin tune, are tracks from a single that reached No. 74 on the Billboard Hot 100 in November 1970.[3][4] "The Nicest Things Happen" was written by Tijuana Brass member Julius Wechter and his wife Cissy.[1]
Summertime received mixed contemporary reviews. An August 1971 review distributed by the Gannett News Service concluded: "Nothing exceptional in this album except some easy to take, summertime listening. Publishers release books that don't tax the mind at this time of year too."[5] Writing in the Detroit Free Press in the same month, reviewer Bob Talbert had a more positive impression: "Alpert has adjusted, one hopes, to the fact that even the Tom Joneses and Johnny Cashes cool off and find a steady sales and popularity groove. This new Alpert Brass album will bring joy to his fans' hearts and gain him a legion of new ones."[6]
In a modern-day review of the album for AllMusic, Richard S. Ginell lamented: "Clearly, Alpert wasn't quite ready to re-emerge full-blown into the performing world."[7]