 The 1970s saw "progressive" acts like Tamam Shud, Tully and Blackfeather emerge, followed by glam groups Hush & Ted Mulry Gang.Sydney is famous for its alternative rock scene, with such names as The Celibate Rifles, indie rockers The Clouds, The Vines and The Crystal Set, to electronic music pioneers Severed Heads, Single Gun Theory, The Lab, Itch-E and Scratch-E and local favourites Sneaky Sound System.Sydney is the original home of the now national alternative rock festival the Big Day Out, which began in Sydney in 1992 featuring local bands such as You Am I and The Clouds and international groups like Nirvana.