Meddle (Gatefold LP Jacket, 180 Gram Vinyl)MEDDLE was the first album to hint at the musical identity that would define Pink Floyd in the mid to late '70s. Whereas prior releases like UMMAGUMMA and ATOM HEART MOTHER announced the presence of new singer guitarist songwriter David Gilmour, MEDDLE represents the band's Gilmour influenced evolution toward a sleek, epic, spacey sound. In "Echoes," an ambitious 23 minute soundscape, the pinging of a synthesizer greets the listener before Gilmour's