I agree with chiliD and CarneVaca, in that all the sound is coming strictly from guitars only. The song consists of MANY guitar layers, many of which have been processed, sped up, slowed down, etc etc....but I'm very sure that it
is only guitars. Compared to LB I am very limited in what equipment I have at home, and yet I can produce some recordings which are ONLY mixes of electric and acoustic guitar in which you can hear drum sounds that don't actually exist. Red Rover is very rich in what LB phrased perfectly as "negative space." What some people are hearing as a "bass drum" sounds to me like a guitar track (possibly slowed down and) fed through some sort of slow tremolo effect (or equivalent).
