I have had several auditory and visual hallucinations when manic and manic or depressed with mixed features in the past, though delusions were my most frequent form of psychosis, and most traumatic. Antipsychotic increases helped. Really, antipsychotics are generally my main manic fighters.

I have also had auditory hallucinations when not clearly in a mood episode. Those were actually the longest term. They started as musical hallucinations and sometimes turned into one or multiple voices talking at the same time, almost like DJs talking or talking over each other. I also had cases when I thought people said things to me that they vehemently denied saying. It's never been clear what caused these, but they happened more times than I can remember. The former started once or twice per day. After a few weeks they happened numerous times of the day, and that continued for a few months. The latter happened maybe a dozen times, and included visual hallucinations some times. It all became severely disturbing. My medication hero for ending these was Tegretol XR, an anticonvulsant moodstabilizer. I still take a high dose of this medication and never want to go off of it. Debates between my psychiatrist, a neurologist, and epileptologist suggested a psychiatric disorder and/or seizure activity. Dissociative hallucinations were also mentioned (for the ones that didn't include music). A definitive diagnosis for these has never been made.

My auditory hallucinations when clearly psychotic included mostly a woman calling my name over and over, knocking sounds again and again, and my deceased mother talking to me.