5:07 Why we use DSU
11:20 DSU Procedure
15:45 Tuning A4 – Over Pull and Under Pull – One Pass Pitch Raise
41:15 Tuning A4/Tuning Clean Unisons – Practical
How to Tune Pianos
The Hobby, Skill, and Career of Piano Tuning
By Mark Cerisano
5:07 Why we use DSU
11:20 DSU Procedure
15:45 Tuning A4 – Over Pull and Under Pull – One Pass Pitch Raise
41:15 Tuning A4/Tuning Clean Unisons – Practical