July 1, 2015
(UNDATED) CNN -- Singer Dave Matthews is usually the main event at concerts, but not this weekend.
He's opening up for President Obama at two rallies during the final weekend before election day.
The first will be in Bristow, Virginia on Saturday. Matthews will then join Obama in Aurora, Colorado on Sunday.
President Obama is getting more musical help on Monday. Bruce Springsteen and Jay-Z will join him on the final full day of the presidential campaign.