Sunshine Corazon, aka Charice, made her first appearance as an exchange student on last week’s episode of “Glee.” Her throaty arrangements immediately served as foil to Rachel’s Broadway-ish song stylings –- and prompted a musical catfight that will no doubt extend the rest of the season (until, in true “Full House” style, Sunshine and Rachel make up, become best friends and battle evil with high notes). Charice, the 18-year-old belter who has earned comparisons to Whitney Houston and Celine Dion, was discovered on YouTube and then featured on “Ellen” and Oprah.” Speakeasy caught up with her to chat about Sunshine’s arc for the season. Read the full story