Sewer2.mds score from Mageslayer - originally composed by Kevin Schilder in 1997.
This is a 2013 mix (which was not created by Kevin Schilder), made with new instruments and percussion samples out of Solar Battery.

Solar Battery voices: pedal hi-hat, closed hi-hat, open surdo, mellow tambourine, large wooden guiro, woodblock, cabasa (short scrapes).

Download the decent-quality FLAC file.