$24.99 MetroDrone®: All purpose practice tool Acoustic Bass quantity Add to cart Categories: Ear Training, Time Studies, Instrumentalists, Guitarists, Bass Guitarists Description Description Digital Downloads are Non-Refundable Related products Jazz and Blues Bass Lines Digital Copy $13.99 Add to cart 25 Ear Training Tips: Video Course $24.99 Add to cart Doing Time Rhythm Series Bundle $34.99 Add to cart Jam Tracks Volume Three special $19.99 Add to cart