This collection shows how important The Cranberries were to alternative music. The Irish band put a spin on the form with jangling guitars and Dolores O'Riordan's keening vocals. Sometimes dreamy and medieval, at other times saucy and coy or topical and butch, these 20 songs show why the band sold millions of albums. With two previously unreleased tracks -- " New York , New York ," with distorted Kiss-esque guitars and otherworldly vocals, and the lilting "Stars" -- this is a history of a band building toward its peak before falling down the other side.