(Image source: technobuzz.net) Shares of the streaming online music provider Pandora Media Inc (NYSE:P) are rallying in early trading after the company revealed strong listener gains for the month of March. For example, Pandora’s total U.S. radio listening share jumped to 9.1 percent for the month of March. This is first time that the company has ever reached above 9 percent in total U.S. radio listening share. Compared to the same period last year, Pandora’s active listener base increased to 5.8 million. Moreover, listener hours for the month of March climbed to 1.7 billion, which surpassed February’s 1.51 billion hours.