Beautuful! I love it when a trained singer can hit a note and stay on it. I abhor those vocal aerobics which must be used to cover a lack of talent and art.
Sidenote: 5th dimension recorded "one less bell to answer", burt bacharach wrote the song with hal david. Bacharach got the idea for the song when he was a guest at a party and someone called the hostess and said they would not be able to attend and after hanging up the phone the hostess remarked "oh well one less bell to answer". The hostess was a well known singer but i can't remember who it was.
I love to hear the story behind a song. I used to do those on a radio show I used to produce.