Now THAT was classy! And it was more appropriate for a JW place of worship (bearing in mind the past JW mindset about 'entertainment' and music in the KH, etc.).
It's sad in a way: a factor in prompting me to join a 'worldly' choir before fully leaving was the new songbook which ruined many of the older songs and where the pre-recorded piano arrangements had become so bland, so robotic. These Indianapolis guys breathe life and passion into the songs. The sad thing is, this is likely a one-off.
Blondie says she remembers the time many decades ago when the older songbooks had SATB notation to allow bringing more color and depth to the songs. But they cut that out and it has long been one of the deficiencies in JW services - taking a pride in the music, using it creatively and expressively to stir the soul, and having the songs sung well or led by a choir.
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As an aside, there's a recent and interesting article on JW music and its development over the years:
THE JEHOVAH’S WITNESSES’ CHANGING HYMNODY
by George D. Chryssides, University of Birmingham UK
A paper presented at the CESNUR 2013