"You've Made Me So Very Happy" is a song made popular in 1969 by the American jazz-rock band Blood, Sweat & Tears. I have no idea about that sample, can't see how or where it fits into the song.
who did they sample at 0:01 - 0:14 ? because who ever they sample manny fresh did too. it sound like Westside Connection - Connected for life 0:14 - 0:16 or at least inspired manny fresh to make that beat.