For swinging, swooning, hypnotically romantic music this Valentine’s Day, consider a night in Redwood City with the Aurora Mandolin Orchestra. This venerable 30-member group has been around over 70 years with musicians playing mandolins, mandolas, mandocellos, string bass, accordians and flutes, specializing in classics and European folk songs. On Friday you’re invited to get up and get moving to tangos, rhumbas and swing. $7. You’ll find them fiddling at other locales on Monday February 20, March 26 and April 23.