WASHINGTON (WUSA9) -- It's going to be "One Sweet Day" for fans of the R&B group Boyz II Men when they take the stage at MGM National Harbor in December.

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The legendary R&B group Boyz II Men will be the first performers to "Relax Your Mind" at the theater opening up at the new MGM National Harbor come December.

December 15 is the date to save. Now don't go "Losing Sleep" because tickets don't go on sale until Friday, November 4 at 10 a.m. Tickets to hear the soulful voices will range from $39.50 to $85.

For more show and ticket information visit: www.mgmnationalharbor.com or www.ticketmaster.com.

A Live Nation pre-sale as well as a pre-sale for M Life Rewards loyalty members will start on Tuesday, November 1 at 10 a.m.