Seattle rapper Macklemore and hip-hop producer Ryan Lewis broke with the sleeper, “Thrift Shop,” selling more than 6 million digital copies while racking up close to 300 million YouTube views… and they’re back. Macklemore & Ryan Lewis become the first duo to reach No. 1 on the Hot 100 with its first two singles in the 50-plus year history of the Billboard chart. Before the acts’ “Can’t Hold Us” charted at No. 1 this week, Lady Gaga took her first two singles, “Just Dance” and “Poker Face,” to No. 1 in 2009. Macklemore has been one of most downloaded (and streamed) artists of 2013, and most demanded on the road too, even selling 3,750 tickets at MIT in April — the technology school’s “highest attended Spring concert in recent memory.” He’ll be performing with Ryan Lewis at Turner Hall as part of the Yahoo! On the Road tour on May 12, and the two will be at dozens of summer festivals across the country and the globe, including: Sasquatch Festival in Quincy, WA on May 24 (w/ Mumford and Sons), Roots Picnic in Philadelphia on June 1 (w/ The Roots), Bonnaroo Festival in Manchester, TN on June 16, Wireless Festival in London on July 13 (w/ Jay-Z), and Made in America in Philadelphia on September 1 (w/ Beyonce).