Complex sentence: However, this is not the case, since the electric bass guitar is not strummed; the strings of the bass guitar are plucked (as opposed to the double bass which may be either plucked or bowed).
Split into simpler sentences: However, this is not the case, since the electric bass guitar, is not strummed. Instead the strings of the bass guitar are plucked (as opposed to the double bass which may be either plucked or bowed).