A & R Definition

abbreviation
Artist(s) and Repertoire: with reference to those officials of commercial recording companies who select the performers and supervise the production of recordings.
Webster's New World
Wiktionary
Wiktionary

Adult; as used in film rating.

Wiktionary
Wiktionary
letter

The first letter of the English alphabet, called a and written in the Latin script.

Apple starts with A.
Wiktionary
numeral

The ordinal number first, derived from this letter of the English alphabet, called a and written in the Latin script.

The item A is "foods", the item B is "drinks".
Wiktionary
symbol
The highest rank on any of various scales that assign letters.
We assign each item inspected a rating from A through G, depending on various factors.
Wiktionary
(education) The highest letter grade assigned (disregarding plusses and minuses).
I was so happy to get an A on that test.
Wiktionary

(music) A tone three fifths above C in the cycle of fifths; the sixth tone of the C major scale; the first note of the minor scale of A minor; the reference tone that occurs at exactly 440 Hz; the printed or written note A; the scale with A as its keynote.

Orchestras traditionally tune to a concert A.
Wiktionary

(medicine) A blood type that has a specific antigen that aggravates the immune response in people with type B antigen in their blood. They may receive blood from type A or type O, but cannot receive blood from AB or B.

My blood type is A negative.
Wiktionary
(chemistry) Mass number.
Wiktionary

Origin of A & R

  • From Middle English and Old English upper case letter A and split of Middle English and Old English upper case letter Æ.

    From Wiktionary