Since a dominant 7th chord consists of a root, a major third, a perfect fifth and a minor seventh, can you play the chord with just three notes? Or do you strictly need to play it with all four notes?
i think i can safely say, the essence of that chord for the most part in today's society is, for example, C in the bass and E and Bb near the middle C range. that would be the commonly understood and socially functional and effective essence of the C7 chord, in so far as i have experienced