Upon returning to LOCATION@1 , PERSON@1 returned to his chair in the cello section , and participated as cellist in the world premiere of PERSON@2 's Otello -LRB- ORGANIZATION@1 , LOCATION@2 , NUMBER@1 -RRB- under the composer 's supervision .

When he got back to LOCATION@1 PERSON@1 returned to his chair in the cello section , and took part as cellist in the first performance of PERSON@2 's Otello -LRB- ORGANIZATION@1 , NUMBER@1 -RRB- .
