Looks like Downtown is going to be the best place to be today. Memphis in May, of course, kicks off its month-long celebration this weekend with the huge Beale Street Music Festival, which will honor the 50th anniversary of rock-and-roll with live music on four stage for three days, with such acts as Jerry Lee Lewis, Foo Fighters, the Bar-Kays, Sister Hazel, Indigo Girls, Free Sol, Lucero, George Clinton & Parliament/Funkadelic, Chaka Khan, Three 6 Mafia, and dozens of others. It s also the last Friday of the month, which means tonight s South Main Trolley Art Tour, with all of the galleries and shops opened up late and free trolley rides. And with all the mayhem going on Downtown, this should be a fun one. Opening receptions and one-night art shows in the neighborhood include: D Edge Art & Unique Treasure for work by George Hunt; Memphis Heritage for a digital photographic essay by Fred Asbury; 493 S. Main for paintings by William Goodman; and Earnestine & Hazel s for work by Jeanne-Marie Kenny, Melanie Spillman, and Lindsay Palmore. Back on stage, Picnic opens tonight at Playhouse on the Square, and The Wiz opens at Theatre Memphis. And, as always, The Chris Scott Band is at Poplar Lounge tonight.