Dominoes spots from one to six are generally arranged as they are on six-sided dice, but because blank ends having no spots are used, seven faces are possible, allowing 28 unique pieces in a double-six set. However, this is a relatively small number especially when playing with more than four people, so many domino sets are "extended" by introducing ends with greater numbers of spots, which increases the number of unique combinations of ends and thus of pieces. Each progressively larger set increases the maximum number of pips on an end by three, so the common extended sets are double-nine, double-12,
How Many More Years formed his own band in West Memphis, Arkansas, in 1948, billing himself as "The Howlin' Wolf". He began broadcasting on radio station KWEM in West Memphis, and was heard by Sam Phillips who signed him for Memphis Recording Service. He recorded "How Many More Years" at the MRS studio at 706 Union Avenue, Memphis, Tennessee, in or about July 1951, singing and playing harmonica with a band comprising (probably) Ike Turner (piano), Willie Johnson (guitar), and Willie Steele (drums). The repetitious bass-string boogie line resembles the one played in the traditional blues standard "Forty-Four". The record's original A-side, "Moanin' at