To the confused.... playing above the chord means adding to the harmony as a soloist, typically an octave above the prevailing harmony. In this context you're playing a high 'F', it'll clash with the 'E' in the 'C' chord as previously discussed (as a b9). But if you're playing bass, below the prevailing harmony, the 'F' played lower, underneatht the prevailing harmony will resulting an pleasing 5, M7 & 9. Lovely!