|Genre Categories||Trios; For violin, cello, harpsichord; Scores featuring the violin; Scores featuring the cello; Scores featuring the harpsichord; For 3 players; For flute, cello, harpsichord; Scores featuring the flute|
|Work Title||Harpsichord Trio in B-flat major|
|Opus/Catalogue NumberOp./Cat. No.||ZT 87|
|I-Catalogue NumberI-Cat. No.||IGP 5|
|Composer Time PeriodComp. Period||Classical|
|Instrumentation||harpsichord, violin or flute, cello|
Help me out here. 3rd instrument "unspecified" according to RISM; on what basis do we say it's a harpsichord?