Last night's live performances began with a full-throated "Star Spangled Banner" by Jennifer Hudson. John Legend sang "Yes We Can" around the rap of Wil-i-Am and the Agape Choir, but unfortunately, the choir was almost inaudible (on C-Span anyway).  Whatever sound glitches were fixed by the time Sheryl Crow did her upbeat and optimistic 3-song set: "A Change Will Do You Good," "Out of Our Heads" and "Everyday Is a Winding Road" which she combined with Johnny Nash's "I Can See Clearly Now."  Stevie Wonder along with Take 6 sang "Fear Can't Put Dreams to Sleep."  Then Stevie rocked the house - or, shall I say, stadium - with "Signed, Sealed, Delivered" which Obama has been using as one of his campaign theme songs.  The final and most emotional vocal performance of the night was Michael McDonald who sang "America, the Beautiful" from deeper than his soul; more like from the sole of his feet.