AllMusic Review by Scott Yanow:
Thelonious Monk’s 1960 quartet (which also includes tenor saxophonist Charlie Rouse, bassist John Ore and (for a brief period) drummer Billy Higgins is augmented on this live session by two guests: trumpeter Joe Gordon and the tenor of Harold Land. The extra horns uplift the date and add some surprising moments to what otherwise might have been a conventional but still spirited live session. Highlights include “Let’s Call This,” “Four in One” and a swinging version of “I’m Getting Sentimental over You.” (http://www.allmusic.com/album/at-the-blackhawk-mw0000194844).
A1 Let’s Call This 0:00
A2 Four In One 8:32
A3 I’m Getting Sentimental Over You 17:12
B1 Worry Later 23:26
B2 ‘Round Midnight 32:35
B3 Epistrophy (Closing Theme) 44:42
Joe Gordon – trumpet
Harold Land – tenor saxophone
Charlie Rouse – tenor saxophone
Thelonious Monk – piano
John Ore – bass
Billy Higgins – drums
Recorded live on April 29, 1960 at The Blackhawk, San Francisco.