When Ella Fitzgerald selected the songs of Irving Berlin for the fourth volume in her acclaimed Songbook series, it turned out to be a match made in heaven. Ella Fitzgerald Sings the Irving Berlin Songbook, recorded over one week in March 1958, featured more than 30 selections from the legendary songwriter including "Puttin' on the Ritz," "Alexander's Ragtime Band," "Cheek to Cheek," "How Deep Is the Ocean," "Always," and "I've Got My Love to Keep Me Warm." Berlin's extraordinary body of work