I chose a persona (suno) with which I had had some success getting Suno to give me a duet. My lyrics are not really suited to duets on the whole, so no real stats have accumulated, but it only seems to work about 30% of the time. Great when it works but can't keep regenerating and hoping, The more regenerations I perform, The less likely is the AI to vary what it has already given, I may come back to this in the future, but for noe enjoy it with an ethereal female vocal.