Complex sentence: Bass guitar was then overdubbed by Appel with some harmonica and slide guitar contributed by Dalton along with doubletracking of Ward's vocals and the use of a stomp box effects unit compressor on the 12-string guitar parts.
Split into simpler sentences: Bass guitar was then overdubbed by Appel with some harmonica and slide guitar contributed by Dalton along with doubletracking of Ward's vocals and. A stomp box effects unit compressor was used on the 12-string guitar parts.