All changes to tower
| Date | Change | Source |
|---|---|---|
| 12 Apr 2020 | 1-3: frameid added; fr1: details added | Tim Jackson via e-mail |
| 20 Apr 2009 | Tenor note not B; nominal: Bb+11c; tuning info added | Bill Hibbert (Tim Jackson recording) via pNBR |
| 1-3: nominal added | Bill Hibbert via 00007318 |