No sound drop-out here, Terry. I agree with DNJ about the harmony, and believe it is the vocal harmony setting(s) because your vocals are clear when singing with no harmony.

All the best,

Gary cool
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PSR-S950, TC Helicon Harmony-M, Digitech VR, Samson Q7, Sennheiser E855, Custom Console, and lots of other silly stuff!

K+E=W (Knowledge Plus Experience = Wisdom.)