Complex sentence: Someone labeling music as "acoustic" or as "unplugged" may make an implied contrast to music that has become "cluttered" by technology and overproduction: in this sense, some may consider acoustic music more sonically "pure".
Split into simpler sentences: Someone labeling music as acoustic or as unplugged may make an implied contrast to music that has become "cluttered" by technology and overproduction. In this sense, some may consider acoustic music more sonically "pure".