A & R - artiste & repertoire...very simple...
ARTISTE DEVELOPMENT - from the ground up to international sales, development for local artistes in all languages.
REPERTOIRE - possible content and release of artiste's work to various regions, marketing & sales AND most forgotten all the time....catalogue sales that account for 68% of yearly sales....reissues, remastering that translate to re selling ....
me, former A & R for arista, RCA BMG classics, windham hill....the job made me vomit blood as my bosses then did not comprehend the significance of the said two points....