****** for free, HD video, double bass lessons & free bass player resources. In this episode of Ask Geoff & Lauren we answer three questions. How often you should change your strings, rosin and bow hair? We all have to replace these from time to time, so find out what we recommend and learn about getting the most from your bass gear! We hope you enjoy this video and would love to hear your comments, ideas, feedback and questions. Please join us in the comments ts section below. Geoff & Lauren