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
Pairing Pairing In mathematics, a pairing is an "R"-bilinear map of modules, where "R" is the underlying ring. Let "R" be a commutative ring with unity, and let "M", "N" and "L" be three "R"-modules. A pairing is any "R"-bilinear map formula_1. That is, it satisfies for any formula_5 and any formula_6 and any formula_7. Or equivalently, a pairing is an "R"-linear map where formula_9 denotes the tensor product of "M" and "N". A pairing can also be considered as an "R"-linear map formula_10, which matches the first definition by setting formula_11. A pairing is called perfect if the above map