What is The Overall Feel of this Song :
The mood of the song is upliftingly happy, to the point of almost ecstasy or bliss.

What Musical Element Put Off This Vibe :
The Synthesizer  along with the vocals that seemed gleeful - almost in an acapella like manner gave a 'groovy' element. The upbeat tempo that accompanied it it also helped the song feel relaxed.

Identify the Choices the Musician had to Make to Get this Feel and Why they Worked :
Shuggie Otis used an upbeat rhythm accompanied by a synthesizer and vocals to expound upon the groovy/funky tune and it and make it even more blissful and relaxed.