This is a separate BBC show, check the link and the website.
It is NOT a dupe as mentioned !!!
https://www.bbc.co.uk/iplayer/episode/b09ffzkd/popular-voices-at-the-bbc-series-1-1-showstoppers
"This compilation is a companion piece to the Showstoppers episode of Gregory Porter's Popular Voices... Featuring clips from various BBC programmes including How It is, Dusty, Top of the Pops, It's Lulu and Wogan, these are our showstoppers".
I think it would depend on how much new footage there is.
So definitely 2 separate series of 3 episodes each
ok, so I've watched the first 2 episodes of "Popular Voices at the BBC" and it is just a compilation of old video's of various singers. There is no new footage at all and it isn't presented by anyone at all. One video plays, another straight after and so on...
It definitely isn't a dupe, as I incorrectly stated when I scheduled it for deletion, but I still think it isn't allowed due to there being absolutely no new footage in it whatsoever and no presenter or voiceeover.
Gregory Porter's Popular Voices is very different. it has a presenter, for starters. There are classic video's as well, but also interviews with various people made especially for the series.