Glenn,
Keep in mind that most of these folks are not very much older than you and I. Therefore, the songs they'll enjoy the most are those that were popular when they were 15 to 25 years of age. Kinda' scarey ain't it!

Gary
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Travlin' Easy
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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.)