All changes to tower
| Date | Change | Source |
|---|---|---|
| 22 Jul 2010 | 1-6: frame id added; frame info added | James Clarke via e-mail |
| 8 Nov 2004 | Tenor nominal supplied, so note is NOT G (nominal=F#+8c) | Bill Hibbert via e-mail |
| 14 Sep 2004 | GF removed | Tim Jackson#68 (after visit) via e-mail |