Complex sentence: In his solo work, he often does not use distortion or effects, striving for a purity of sound, but has made occasional use of a serrated pick to "bow" the strings of his guitar, creating an otherworldly, harmonic-rich sound.
Split into simpler sentences: In his solo work, he often does not use distortion or effects, striving for a purity of sound. He has also employed an original technique--the use of a serrated pick to "bow" the strings of his guitar--to create an otherworldly, harmonic-rich sound.