“instruments that rivaled those of the Mousterian culture that existed at that time in Europe”
There is in fact quite a bit of controversy surrounding those instruments. From www.combo-organ.com:
This one has typically been thought to be a Farfisa Combo Compact, but there’s been quite a bit of discussion and disagreement about it, with much of the available evidence actually pointing to a Vox Continental as the more likely instrument, including several photos and live appearances with the Vox. According to “The Billboard Book of Number One Hits”, regarding “96 Tears”: “One of the song’s attributes that has merited attention the past two decades has been its acclaimed use of the Farfisa organ. It was a surprise, then, when Martinez (Lead singer/songwriter Rudy Martinez), revealed in a 1982 Goldmine interview with Jeff Tamarkin that the group used a Vox organ, not a Farfisa” .
Oh, sorry, that was the “Mysterians”.