How to create this Old Skool Bass sound

It’s the sound that comes in at 0:54. You can hear it on its own near the end of the track at 3:20.br
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Sounds to me like a classic house organ, has it been detuned? How would I recreate that sound?br
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For anyone interested, It’s the organ sample from the Casio cz 101 / cz 1000br
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