50 AT FIFTYThe Hollies made their recording debut in 1963, playing energetic but well scrubbed versions of American R&B classics, but within a few years they would make an international impression with their glorious three part harmonies, jangling guitars, and clever, catchy pop tunes. Once the Hollies hit their stride with "Look Through Any Window" and "Bus Stop" in 1966, they enjoyed a string of hits that lasted well into the '70s, and if their profile faded