Here's a simple sorta way to play something that sounds like what Chris Staples plays at the start of the Dark Side Of The Moon. e|---------------------------------------------------------------------------| B|---------------------------------------------------------------------------| G|-2-2-0-----0---------------------------------------------------------------| D|-------3-2---2p0------------0-2-2-2p0------------0-2-2-2p0-----------------| A|------------------h3---3-3-------------h3---3-3-------------h3---3-3-------| E|----------------------1-1------------------1-1------------------1-1--------|