After trading lower this morning, Pandora (P +5.7%) has shot higher on a day that has seen the release of the company's May audience metrics, and an AllThingsD report about an iRadio licensing deal with Sony Music (the last major label to be signed). Pandora's May figures suggest its mobile listening cap continues to change user habits. Listener hours rose 22% Y/Y to 1.35B, but that growth rate is down slightly from April's 24%, and considerably from March's 40%. Also, Pandora's U.S. radio listening shared fell to 7.29% from 7.33% in April and 8.05% in March (it was 5.8% a year ago). Active listeners +1% M/M and +33% Y/Y to 70.8M.