you wouldn't happen to have a 45 with some sympathetic note sitar drones you could do this with, would you? something by the byrds, maybe? any kind of raga rock would work, really. i'm curious as to just how similar it is to the velvet underground, as i have a hypothesis that the sound heard in "venus in furs" or "all tomorrow's parties" was developed by playing some raga rock 45s at 33 rpm.
http://www.youtube.com/watch?v=-awaik3mtJ0
you can hear it a bit at the end of this, but it's not a strong enough demonstration.