Grootbas-schalmei
- longName: Great Bass Shawm
- shortName: G.B. Sh.
- description: Great Bass Shawm
- musicXMLid: wind.reed.shawm
- clef: G8vb
- transposingClef: not set
- concertClef: not set
- barlineSpan: 1
- aPitchRange: 36-52
- pPitchRange: 36-55
- transposeDiatonic: not set
- transposeChromatic: not set