Monster Mash Halloween Benefit PA's Lounge, Union Square (356 Somerville Ave) October 29, 2007, 8:00 pm, 21+ $10 suggested donation Somerville's got good claim to the "Monster Mash" label. Bobby Pickett, responsible for penning the perennial Halloween hit (which is one of only three records to hit the Billboard Top 100 three separate times), was a Somerville native. Pickett passed away in April of this year, so this will be the world's first Halloween without......