15 years in the making!
The Updated Avitsur Routine - download here for free!
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"Set Me As a Seal" from New Creation for Trombone Octet Rene Clausen/ Haim Avitsur

Sarabande from Suite No. 5 BWV 1011 JS Bach/ Performance edition by Haim Avitsur

Aria from Larsson Concerto transcribed Trombone Sextet  Larsson/Haim Avitsur

Two Pieces for Trombone Trio by Gordon Jacob/Haim Avitsur 

J. S. Bach Goldberg Variations BWV 988
for Trombone Trio (using the full score is recommended)
For a recording sample go to https://youtu.be/6Bkdi_yTlZw 
For Brass Trio (using the full score is recommended)

Dies Irae from Mozart Requiem for Trombone Sextet

Tuba Mirum from Mozart Requiem for Trombone Sextet

Lacrimosa from Mozart Requiem for trombone Octet

J. S. Bach Sonata for No. 1 for Viola da Gamba in G Major
for Brass Trio
for Brass Trio but in F Major
for Trombone Trio
for Trombone Trio but in F Major

La Grace for Trombone Sextet Telemann/Haim Avitsur