The Lumineers ’ performance on the recent Grammy Awards show helped propel their self-titled debut album to platinum status. With an increase of 70 percent, weekly sales jumped to more than 66,000. The album has now sold more than 1 million copies since its release in April 2012. The Denver-based band’s first single, “Ho Hey,” is triple platinum with sales of almost 3.5 million copies. The Lumineers resume touring with an April 19 concert in Berkeley, Calif.