Improve singing skills and stable breathing

The following story describes my father’s request for homeopathic advice:

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I am a 70 years old physically strong man, and am currently under treatment for irregular heartbeat (fast), high blood pressure, blood deficiency (hemoglobin). I’ve been given electric shocks three times in the last two years. And since then I am experiencing a lot of negative side effects. I will remain under treatment till the end of this year and if nothing improves, than I will go for homeopathic treatment and will describe every disease/symptoms in full detail in another post.

But for the time being I would like to request homeopathic advice for my singing skills and breathing issues while singing. My hobby is singing light classical Indian old songs, those songs which are composed in specific ragas such as ghazals etc.

The reason is that I think my throat stamina and powerful breathing has decreased a lot, with the current medicines I am using for previously mentioned diseases.

Hereby a list of medicines that I am using:

1) Sotalol (for heartbeat)
40 mg tablet in the morning before breakfast, 80 mg in the evening before dinner
2) Phenproucoumon (for thrombosis disorder) Blood thinner
3 mg according to the monthly calendar issued by the thrombosis department
3) Nifedipine (for heart / blood pressure)
30 mg 1x daily
4) Omeprazole (for gastric)
40 mg 1x daily

Temporary use:
5) Ferrofumaraat (Iron tablet)
200 PCH
6) Cholecalciferol (Vitamin D)
800 I.E.

Thank you very much,

Regards,
Abdul Munaf
(The Netherlands)