The DVD has arrived so I have seen Sparkle on a small screen.
It is not the greatest drama ever but the music is very strong and I still don't understand why it was not in UK cinemas ( with very few exceptions, certainly not west of Bristol)
I have now found this on YouTube, which explains the story structure
There are variations in the story but I notice towards the end as happiness is off scale there is a higher proportion of music.
I'm still looking for an Exeter venue.