Beyonce Knowles brought New York's Rockefeller Plaza to a standstill this morning (02APR07) when she performed for free. The pop superstar was promoting the Deluxe Edition re-release of her new album B'DAY on morning show TODAY when she took to the stage to sing for thousands of fans. Knowles performed an acoustic version of her smash-hit IRREPLACEABLE and threw in a little Spanish - the singer has re-recorded the song in Spanish. She then completed her two-song set with new song GREEN LIGHT.