For Ukulele Orchestra: 3 Low G plus Bass or 1 Low, 2 Hi G plus Bass
For advanced intermediate and advanced players.
Each pack comes with a score in notation, and separate parts (in both TAB and Notation), as well as a short introduction with playing notes. There is a second file containing a midi audio file of the entire arrangement.
Here is a Soundcloud file of section A with Ian playing all the parts