Justin Bieber performs surprise acoustic gig in beleaguered Los Angeles park

Small crowd enjoys singer's free concert in MacArthur Park, which has often drawn headlines for less cheery reasons

With no announcement and little fanfare, Justin Bieber performed a free acoustic set on Monday at a Los Angeles park often in local headlines for less cheery reasons.

In videos that surfaced online, four musicians flanked the global phenom, who wore a plain T-shirt and shorts as he sang hits including Daisies and Yukon. The low-key affair with a small crowd stood in stark contrast to Bieber's recent blockbuster World Cup and Coachella performances.