The group gave its first performance as the Amadeus Quartet at the LOCATION@1 in LOCATION@2 on NUMBER@1 January NUMBER@2 , underwritten by PERSON@1 of PERSON@2 -LRB- ORGANIZATION@1 NUMBER@3 May NUMBER@4 -RRB- : -LSB- -RSB- .

The group gave its first performance as the Amadeus Quartet in the LOCATION@1 , LOCATION@2 on Jan. NUMBER@1 , NUMBER@2 .
