Blofeld wavetables

[RobertR]

Hello everyone.
I'm trying to build pipe organ sounds into my Blofeld.
I obtained the spectra of every sound from an organ expander by a spectrum analyzing software.
Now I would like to build them by summing all the harmonics.
The idea would be assigning a sinusoidal wave for each individal harmonic, from the fundamental up to the 64th, to each of the 64 waves of one wavetable, and then having the Blofeld play all the 64 waves together.
However, what I read until now mentions sweeping in sequence from wave 1 to wave 64. Any means of having all the 64 waves play simultaneously?
Thank you to anyone who can explain

Roberto