Stereo problem:

The other day I was listening to my Original London Cast Recording of HAIR on my CD player, and somehow on the last song I missed the lyric I like about "We starve/ look/ at one another/ short of breath/ walking proudly in our winter coats/ wearing smells from laboratories..." At first I thought I was distracted or that maybe I had confused some song and its reprise, but then when I replayed it, I noticed that somehow one entire vocal line might have fallen out, and then when I replayed another portion of the CD, I also noticed that in this other song half of the lead vocals were gone from there too. THere must be something wrong with my stereo, or perhaps on that one particular CD.