Wall of Sound but Phil came along and took these to make sounds that had not been used in the past. I thought it was ingenious." During the mid-1950s, Spector worked with Brill Building songwriters Jerry Leiber and Mike Stoller during a period where they sought a fuller sound by the use of excessive instrumentation, using up to five electric guitars and four percussionists. This was later to evolve into Spector's Wall of Sound, which Leiber and Stoller consider to be very distinct from what they were doing, stating: "Phil was the first one to use multiple drum kits, three pianos and so
Axiom of pairing that this set "C" is unique. We call the set "C" the "pair" of "A" and "B", and denote it {"A","B"}. Thus the essence of the axiom is: Note that a singleton is a special case of a pair. The axiom of pairing also allows for the definition of ordered pairs. For any sets formula_2 and formula_3, the ordered pair is defined by the following: Note that this definition satisfies the condition Ordered "n"-tuples can be defined recursively as follows: The axiom of pairing is generally considered uncontroversial, and it or an equivalent appears in just about any alternative axiomatization