Thanks (mainly) to VH1, the '80s are cool again, and nothing is cooler than seeing face-melting solos at ear-bleeding volumes. Metal gods SLAYER stop in Atlanta JUNE 27 as a part of the Unholy Alliance Tour. Joining them on this union are Lamb of God, Scandinavian shred masters Children of Bodom and local monsters of metal Mastodon. Air guitar enthusiasts and head-bangers welcome. $34.50-$44.50. 4 p.m. HiFi Buys Amphitheatre, 2002 Lakewood Way. 404-443-5090. www.hob.com/venues/concerts/hifibuys.