Astronomy TI virtual instrument is a free bass sound bank for Virus TI, by Homegrown Sounds.
This is a free collection of 64 Presets for the Virus TI (OS5). They are all ARP based patches covering a full range of styles from grinding Bass riffs to ethereal sequences using the full potential of the Virus TI. Each preset makes use of the 3 Assignable Knobs for transforming the patches in real-time as well as channel pressure (Aftertouch) and Mod Wheel. Knob 2 is always assigned to the Delay Amount.
http://www.hgsounds.com/