Jean-Baptiste Sagnier (Principal Bass, Orchestre Symphonique de Tours, France)
Plays a 4 string bass 

Jean Ane (Principal Bass, Orchestra National de Montpellier)
Plays a 5 string orchestral bass made 2004

Esther Brayer (pr. bass Orchestre National Bordeaux Aquitaine)

solo 4 saiter und orchester 5 saiter 2015

Benoit Dunoyer de Segonzac (Jazz Double Bassist)
Plays a 5 string bass made in 2006 

Symphony Orchestra Mulhouse

Orquesta De La Coruña, Spain

Symphomie Orchester Granda, Spanien

Symphonie Orchestra Sevilla

Adriano Aguiar (Principal Bass, Lisboa Philharmonic Orchestra)
Plays a solobass