Some of the latest Hamm String instrument’s owners.
- Yamandú Costa, solo: 7 string Classical
- Elodie Bouny, University professor Rio de Janeiro: 6 String Classical
- Guto Virtti, Bassist: 5 String contrabass guitar
- Zé Paulo Becker, University professor Minas Gerais: 6 string Classical
- Artur Bonilla, Deceased: 7 string Classical
- Diego Martin, Solo: 6 String Classical
- Heloisa McMillan, Solo: 7 String Classical
- David Lindley, Multi Instrumentalist and Recording artist: Bouzouki
- Kirk Ward, Recording Artist: L-00 and Bouzouki
- Leo Vanmunching, Solo: 7 string Classical
- David Lippincott, Solo: 7 string Classical Left Hand (Eugene,OR)
- Alex Dalzochio, Solo: 6 String Classical
- Phillip Sparks, Solo and Teacher: 7 String Classical
- Helene Frauenfeld: Concert Harp
- Micah Turchet, Solo: Flamenco Guitar
- Daniel Hagan, Solo: Bouzouki
- Nancy Styles, Solo: Mandolin
- Jason Mowery, Nashville Session Musician and Touring Artist: Bouzouki
- Sheldon Valleau, PolyJesters: Baritone Ukulele,
- Darlene Humphrey, Solo: L-00 Steel String
- Phoebe Powell: Celtic Harp
- Dean Tuftin, Solo: Grand Concert Steel String
- Aaron Young, Recording Artist and Touring musician: 6 String Classical
- Joanna Drummond, Recording Artist: L-00
- Dennis Schmick, Solo: L-00 (solo)