you heard marvin gaye do the national anthem for the nba all-star game?lly express these words and let them linger a little longer. so instead of "o say can you see" it was "o say can you see, two, three,." >> >> reporter: minor took the version to the florida orchestra which was tapped to accompany houston at the game. they took notice of the tempo change right away. >> everybody was a little taken aback, a little like what is this, it's so different. >> it was mary corbett's second year with the orchestra as a violinist. >> we play it before every concert, so we just have it memorized. so when we played this new arrangement, everybody was like, oh, what's this? >> houston later recorded the vocals in l.a., minutes after hearing the accompaniment for the first time. >> she listened, nodding her head, and then after hearing it one time, she said, "okay, i got it." >> just once? >> one time. >> ""the star-spangled banner"" is not an easy song to sing. >> the range of it is really tricky because it starts low, but it ends up high. ♪ o say ♪ you know? and th