I have on occasion run several different stem-splitter applications in the hope of better results. This includes SMP (full version of course), Moises (free) and Ultamite Vocal Remover - UVR. In one case I did find that UVR gave me more favorable results for one of the tracks I was working one. Other than that one instance, I have concluded all these application, based on Spleeter code, are equivalent. None are Perfect if you really want to get the the note for note of any specific track. At the same time, all are miraculus at doing, what up till a decade ago was not even imaginable.
So I ran your "Fortunes" thru UVR - NO Bass track was extracted. The bass appeared in "the rest" with the rest. But are you telling me that no one has used the full paid version of SMP on this song?
BIAB – 2025, Reaper (current), i7-12700F Processor, 32GB DDR4-3200MHz RAM, 1TB WD Black NVMe SSD, 2TB WDC Blue SSD, 1TB WD Blue, 2 TB SK NVMe, 6 TB External, Motu Audio Express 6x6
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