Here you see the natal charts of Chico and Harp Marx.
Harpo's Moon is in Cancer, ruling the Midheaven, septile Neptune.
Neptune is biquintile Venus (creative artistic talent).
Neptune links the Moon to Venus and Venus is on a crucial spot conjunct IC.
We see artistical talent related to public.
Mercury is not aspected by Ptolemaic aspects in orb 5 degrees or in sign. It means communicating at any possible level.
Chico Marx's Moon in Pisces is connecting Venus and Midheaven, while Neptune is on top of the chart, ruling the Moon. We see Moon-Venus-Neptune in contact with the MC again. It is the pattern of the artist.
In the charts of the artists on this blog Art & Astrology you will often find the Moon and/or Venus in Pisces, Taurus, Libra or Cancer and connections between Moon, Venus and Neptune.