As previously announced, on April 20, Dave Matthews and Tim Reynolds will perform at the Wang Center in Boston. Now two additional gigs have just been confirmed for the following days. On April 21, Matthews and Reynolds will appear at the Mullins Center in Amherst, MA. Then on Sunday the 22nd the two will return to Radio City Music Hall (the site of a notable March 2003 gig). Warehouse ticketing is now underway, with the general public onsale to follow late next week.