hmm, while i have to agree with the end of your post, and suspect that any 'popular' faith singer is as compromised as any rock star, i have felt the Spirit musically in two different churches in my life--the first was Evangelistic Temple, in Houston, and the second was a church in the old downtown theatre building in Vallejo, CA--a black church (both former theaters, hmm). And i don't like church music, as a rule--my fave spiritual singer is David Byrne.
In reply to the OP, many do not know that virtually all the music you may have access to may be considered corrupted, if the "A" is 440hz rather than 432hz. Seems trifling, huh?
http://www.youtube.com/watch?v=P5ILuyaZIO4
i just grabbed a link, but there is deeper to go here for a serious musician. Peace.