I thought he was Sec......yes theo, the tall one isnt it...
Theo Bidens is the tall keyboard player and younger one of the two, i don't know about his studio competencies but i know as a keyboard player he should be good in programming including studio programming work but had he been excellent he would have helped Alain Mpela to balance the sound correctly on the album Intifada which he helped on when both gentlemen left Wenge BCBG.
Theo Bidens the keyboard player
..and below Sec ''Bidens'' Bidiampasi the older brother ,the legendary guitarist,arranger, author/composer and sound engineer
Sec is also the father to the young studio engineer, guitarist and keyboard player Leny Bidens based in Europe.
Leny Bidens
Both ie father and son have worked with various big and small names in Congolese and world music including Papa Wemba, Werrason etc, Sec the father i believe has now relocated to Kinshasa leaving the son Leny to run the studio Publicom Studio in Europe, this is where Fabregas recorded his first album, i believe Fally also had some works done on his album Kosa Leka at Publicom.
I am not sure who the father is to Tolbert Solo the young Wenge BCBG soloist, I just remember that Archos said Tolbert is the young brother to Leny so not sure whether Tolbert is the son to Sec or Theo Bidens since Tolbert himself has been in Kin whilst vieux Sec and Leny have been in Europe for years.
