Take it from Alicia Keys: volunteering your time and lending your voice to President Obama's campaign is energizing, rewarding and makes a real difference. In a new Obama for America video released today, singer and activist Alicia Keys offers a behind-the-scenes look of a day on the campaign trail and encourages those supporting the President to get involved. The video features Alicia's recent trip to Philadelphia, PA where she discussed what's at stake in this election and the importance of getting off the sidelines. Additionally, the video's release comes right before the campaign's upcoming Weekend of Action, in which OFA will hold voter registration drives and events across the country.