I would like to point readers to Jason Heath's Double Bass Blog for a useful resource: Virtual Master Class Project, particularly for double bass players.
This project is the brainchild of Memphis Symphony principal bassist Scott Best. Scott Best and Jason Heath have played together in the IRIS Chamber Orchestra for years.
The Virtual Master Class Project is aimed at helping the participants to get feedback on their playing from professionals all over the world.
Read more about how to take part in the Virtual Master Class Project here.
To listen to the published submissions to the project, please visit VMC tracks.