The first concert I went to was Thin Lizzy, second was Blue Oyster Cult, Third was Molly Hatchet. After that the not sure on order. I was very lucky that I worked as a lead shipper for a big company and got free tickets all the time. I've seen many bands over 20 times & more over 10 times. I've live in LA/OC area so when bands come to town you might see three bands or more at one show. This helps stack the numbers. Bands that I've seen over 20 times are: Rush, Dio(R.I.P.), Mötley Crüe, Iron Maiden, Van Halen(with each singer/like Sammy the best), Scorpions, Dokken, Queensrÿche, Ozzy Osbourne. Many of the other I've seen were opening for the first group and many have seen them headline a show or two, bands like Def Leppard, Bon Jovi, Twisted Sister, Black Sabbath, Guns n' Roses, Metallica, Deep Purple, W.A.S.P., Armored Saint, Cinderella, Motörhead, Rainbow, Quiet Riot. There's a ton more. Not all had spikes but many did.