CORRECTION: SEE CORRECTION APPENDED; Nin-Culmell obituary -- The obituary brief in the Jan. 22 California section on music teacher and composer Joaquin Nin-Culmell misstated the name of the Spanish composer with whom he studied as Manuel de Fall. The composer's name is Manuel de Falla.; Nin-Culmell obituary -- The obituary in the Jan. 22 California section of pianist and composer Joaquin Nin- Culmell erroneously reported that he was the older brother of writer Anais Nin. He was her younger brother.