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| CHAMBER ENSEMBLES | |
| IEa | String Trio |
| IEay | String Trio Anthology |
| IEb | String Quartet |
| IEby | String Quartet Anthology |
| IEc | String Quintet |
| IEd | String Sextet |
| IEe | String Septets, Octets, etc. |
| IEf | String Duo |
| IEfy | String Trio Anthology |
| IEg | Piano Trio |
| IEgy | Piano Trio Anthology |
| IEh | Piano Quartet |
| IEhy | Piano Quartet Anthology |
| IEi | Piano Quintet |
| IEiy | Piano Quintet Anthology |
| IEj | Miscellaneous Ensemble |
| IEjy | Miscellaneous Ensemble Anthology |
| IEk | Brass Ensemble |
| IEky | Brass Ensemble Anthology |
| IEl-2 | Woodwind Duo |
| IEl-2y | Woodwind Duo Anthology |
| IEl-3 | Woodwind Trio |
| IEl-3y | Woodwind Trio Anthology |
| IEl-4 | Woodwind Quartet |
| IEl-5 | Woodwind Quintet |
| IEl-5y | Woodwind Quintet Anthology |
| IEl-6 | Woodwind Sextet |
| IEl-7 | Woodwind Septet |
| IEl-8 | Woodwind Octet |
| IEl-9 | Woodwinds - 9 or More |
| IEo | Chamber Orchestra |
| IEoy | Chamber Orchestra Anthology |
| IEp | Ensembles for Inter-Changeable Instr. |