However , DePalma 's most prestigious friend was singer Frank Sinatra .
These friends included singers Liza Minnelli and Dean Martin , and baseball player Willie Mays , with whom DePalma frequently played golf .
DePalma 's most prestigious friend was singer Frank Sinatra .
These friends included singers Liza Minnelli and Dean Martin , and baseball player Willie Mays , with whom DePalma frequently played golf .