On October 21, Arista Records will release a new Sarah McLachlan EP that will be available for the first 30 days exclusively from Apple’s iTunes Music Store, Billboard Bulletin reports. “Acoustic Live EP 2003” will have five songs recorded in concert earlier this year — a pair from McLachlan’s new album “Afterglow,” due November 4, and three older tracks. “Fallen,” the first single from “Afterglow,” debuted at No. 1 on Billboard’s Hot Digital Tracks chart with 2,500 paid downloads. It is also an iTunes exclusive.