It isn't unheard of for a post-baby boomer rock band to have some baby boomer influences, either direct or indirect. For example, a post-grunge outfit might claim Creed, Pearl Jam, Nirvana, and Live as influences but also have traces of Led Zeppelin or the Beatles in its sound. But the post-baby boomers who comprise Silvertide aren't alternative rockers who have some baby boomer influences here and there -- they're a post-boomer band with a totally retro hard rock sound that is firmly planted in the '70s and '80s. The Philadelphia residents' bluesy, gritty, riff-driven songs a...