Conversation so far:
What is Gong 'proper'?
new electric Gong band in Paris.
Did they release any albums?
Magick Brother.
When did they release Magick Brother?
October.
What year was this?
1969.
Did the album win any awards?
CANNOTANSWER.
Did the band tour in support of this album?
The re-born Gong played its debut gig at the BYG Actuel Festival in the small Belgian town of Amougies.
When was the gig?
27 October 1969.
Were there any lineup changes during this period?
Houari left the band in the spring of 1971 and was replaced by English drummer Pip Pyle.
Any other lineup changes?
Christian Tritsch (bass) and Rachid Houari (drums and percussion) and re-connecting with a saxophonist called Didier Malherbe.

Question: When did they join the band?
Self-contained rewrite: When did Christian Tritsch and Rachid Hoari join the band?