For popular a cappella group Straight No Chaser (SNC), the Christmas season is perhaps the busiest time of the year. But in 2010, the reunited university singers best known for their holiday tunes and viral video of “The Twelve Days of Christmas” are trading in the seasonal shtick for a contemporary spring tour.

The spring 2010 outing will hit more than 30 markets across the United States over the course of six weeks. The trek launches with a two-night stand on April 5-6 at Boulder Theater in Boulder, CO, and is currently set to close with a May 17 show at Aladdin Theater in Portland, OR.

Other shows are scheduled for April 10 at Park West in Chicago, IL; April 16 at the Nokia Theatre in New York, NY; April 25 at Lisner Auditorium in Washington, DC; May 1 at Hard Rock Live in Orlando, FL; and May 13 at The Grove in Anaheim, CA.

Originally a vocal group at Indiana University, the men of SNC will return to their alma mater for an April 12 concert at the Bloomington, IN, campus. Though tickets for the general public will range from $19 to $28 for that show, special tickets will also be available for $13 to $23 for those with a valid student ID.

Nearly ten other tour dates are also currently available for SNC’s spring venture. Ticket face values range from venue to venue, but most are priced between $23 and $32.

SNC shot to fame in 2006 when a 10-year-old video of the group performing “The Twelve Days of Christmas” made its way onto YouTube. The video went viral and led to a major label record deal and a duo of holiday-themed albums, 2008’s “Holiday Spirits” and 2009’s “Christmas Cheers.” Both efforts peaked in the top 50 on the Billboard 200.

But in 2010, the vocal group is shaking things up with a non-holiday album, expected sometime in spring. Tentatively titled “With a Twist,” SNC’s latest project will cover everything from popular pop, rock and R&B tracks to Broadway show tunes.

Straight No Chaser itinerary:
(Dates are subject to change.)

April 5 – 6 Boulder, CO Boulder Theater
April 7 Kansas City, MO Midland Theatre
April 8 Maryland Heights, MO Harrah’s Voodoo Lounge
April 9 Royal Oak, MI Royal Oak Music Theatre
April 10 Chicago, IL Park West
April 12 Bloomington, IN Indiana University Auditorium
April 15 Hartford, CT Belding Theater
April 16 New York, NY Nokia Theatre Times Square
April 17 Collingswood, NJ Scottish Rite Auditorium
April 18 Northampton, MA Calvin Theatre
April 20 York, PA Strand-Capitol Performing Arts Center
April 21 Pittsburgh, PA Byham Theater
April 23 Stroudsburg, PA Sherman Theater
April 24 Norfolk, VA Harrison Opera House
April 25 Washington, DC Lisner Auditorium
April 26 Nashville, TN James K. Polk Theater
April 28 Atlanta, GA Center Stage
April 29 Tampa, FL Tampa Bay Performing Arts Center
April 30 Miami, FL Gusman Center for the Performing Arts
May 1 Orlando, FL Hard Rock Live
May 3 Mobile, AL Saenger Theatre
May 5 Arkansas City, KS Robert Brown Theatre
May 6 Dallas, TX McFarland Memorial Auditorium
May 7 Houston, TX Verizon Wireless Theater
May 10 Santa Fe, NM Lensic Performing Arts Center
May 11 Tucson, AZ Rialto Theatre
May 13 Anaheim, CA The Grove
May 14 Fresno, CA Tower Theatre
May 15 Bend, OR Tower Theatre
May 16 Seattle, WA Moore Theatre
May 17 Portland, OR Aladdin Theater