A new-wavey disco diva of yore, a three-hour electronic-music extravaganza and more mod madness round out the trio of club picks this week. The Chase marks its second anniversary with a special live appearance by Stacey “Two of Hearts” Q, while guest DJs Lillyanne and Hawkeye (Futurehouse) throw down a classic Italo set and DJ Javier serves a Moroder-tribute mix. Chop Suey/Far Bar, 347 E. 1st St.; Fri., May 7. Twitter.com/thechaseLA. Another anniversary, the three-year milestone for Incognito at King King, sees a big DJ busting out a big set: NYC's Chris Fortier (Fade Records/Balance Record Pool), with a restless night of purely primal dance music. 6555 Hollywood Blvd.; Fri., May 7. Twitter.com/incognitola. And finally, Mods Mayday continues, as the promoters behind Soulside offer scooter rallies and dance parties all weekend long. Friday, May 7, the grooving is at Bar Melody (9132 S. Sepulveda Blvd.) and Saturday, May 8, it's at the usual spot, Fais Do Do (5257 W. Adams Blvd.). Sounds include Northern soul, reggae, ska and more. myspace.com/clubsoulside.