DoubleBass,superbass

product name variations: pirastro jazzer series double bass g
【预订】the baroque double bass violone
德国霍夫曼斯特 原版进口乐谱书 traditionals for 2 double basses
但是很多人不知道爵士乐里的贝司有两种:bass guitar和double bass.
费舍尔乐谱书 george vance progressive repertoire for double bass