Daddy Yankee and Don Omar are expanding their kingdom…

A benefit concert has been added to the debut of the 38-year-old Puerto Rican reggaeton singer and the 37-year-old Puerto Rican reggaeton singer’s The Kingdom tour, with a portion of the proceeds from the December 6 concert set for San Juan’s Hospital del Niño.

Tickets will go on sale tonight at 11:59 p.m. through Ticketpop, and will be available tomorrow morning at Walmart and at the venue, the Coliseo stadium.

Four San Juan shows will kick off the reggaeton stars’ “musical boxing match” — a 65-concert conciliation tour that the former long-time rivals will take to Latin America and the U.S. in 2016.

Tickets for December 4 and 5 shows are sold out. VIP tickets are still available for a December 3 show, at about $390 each.

While ticket prices for the benefit concert are not yet available, promoter Raphy Pina announced through a press release that they will be “accessible.” Puerto Rican rice brand Arroz Rico is sponsoring the charity show.

“Daddy Yankee and I may have an artistic rivalry but personally we think the same and we want everyone to enjoy a family show that will never be repeated,” Don Omar said in the statement. “We will close this saga with popular prices for the entire public.”

The new partnership between the formerly estranged reggaeton stars also includes a joint album and a TV show for the two artists, who between them have 11 No. 1 hits on Billboard’s Latin Albums chart, 28 top 10 hits on Hot Latin Songs, over 50 million followers on Facebook and Twitter alone, and have sold more than 5 million albums in the United States, according to Nielsen Music.