This is an arrangement of Villa Lobos's Bachianas Brasileiras No. 5 (originally for voice and 8 cellos). Instrumentation includes the following parts: 
 
Flute
Oboe
Clarinet 1
Clarinet 2
Clarinet 3
Bass clarinet
Contrabass Clarinet
Bassoon
Alto Saxophone
Tenor Saxophone 
Baritone Saxophone