Lyra viol and a six string bass viol.
Susanne Heinrich plays a Lyra viol and a six string bass viol.
Although most beginners start with the standard four string bass, if you happen to have a five or six string bass, remember you'll need a fretboard chart that covers that kind of instrument.
So, you've purchased a new nylon six string and you want to learn how to play classical guitar.
Although the volume of tabs available for the bass is dwarfed by the sheer numbers of tabs for the six-string guitar, there are still enough bass tabs out there to satisfy the eager bass player looking to learn new material.