$24.99 MetroDrone®: All purpose practice tool Acoustic Bass quantity Add to cart Categories: Guitarists, Bass Guitarists, Ear Training, Time Studies, Instrumentalists Description Description Digital Downloads are Non-Refundable Related products Doing Time with the Blues Volume Two Digital Copy $29.99 Add to cart Jam Tracks Volume Three special $19.99 Add to cart One Minute Lesson Harmony $24.99 Add to cart MetroDrone®: All purpose practice tool Tuba $24.99 Add to cart