The power of a piano playing woman is quite remarkable. Fiona, Tori, Sarah even Nellie—they each have their own cult-like following, sustaining their careers through fights with labels, concept albums and ill-advised haircuts. Judging by Tuesday night’s performance, Regina Spektor can now officially be added to this list of keyboard icons. With the early 6 p.m. show, the 9:30 Club had the most popular happy hour in the city. The sold-out crowd cheered vigorously at…

The agenda’s coming in a little late this week, many appologies. Before we get into our picks, we’d like to wish a very happy 5th birthday to Jammin’ Java. The Vienna venue that started out small has come far since its beginning, earning acclaim and great acts along the way. Head on out to the ‘burbs (and if you take the metro, wear a belt), and pay Jammin’ Java a visit sometime this month. Might…

TUESDAY: >> The Sea and Cake’s Sam Prekop does solo post-rock at the Black Cat. $12. Local singer Brandon Butler (formerly of Canyon) opens. WEDNESDAY: >> Get a huge dose of hipsterness when The Killers (at right) play Merriweather Post Pavilion. Bands-of-the-moment Keane, Louis XIV, Regina Spektor, and Maximo Park all open. Lawn tickets at $25 are still available at Ticketmaster. >> If you don’t feel like making the trek out to Merriweather, you can…