Matthias Corvinus | Matthias Grünewald | Matthias Flacius | Matthias | Matthias Sindelar | Matthias Bachinger | St Matthias Islands | Matthias Kyburz | Matthias Hues | Matthias, Holy Roman Emperor | Matthias Gallas | Matthias Felleisen | Matthias Church | Matthias Blazek | Matthias Ziegler | Matthias Weckmann | Matthias Storme | Matthias Bruen | Matthías Bjarnason | Matthias Bamert | John Matthias | Johann Matthias von der Schulenburg | Bernd T. Matthias | St. Matthias' Church, Vepery | St. Matthias | Matthias Trübner | Matthias Stom | Matthias Schweighöfer | Matthias Rettner | Matthias Platzeck |
Grossman has presented hurdy gurdy workshops and lessons with Valentin Clastrier, Matthias Loibner, Maxou Heintzan and Simon Wascher.
Many of the current hurdy gurdy players use his instruments, including Valentin Clastrier, Gilles Chabenat, Germán Diaz, Tobie Miller, Matthias Loibner, Ben Grossman, Marc Egea and Hållbus Totte Mattson.