1º_ It was called 'wall of sound' or 'wall of sound' to a mode of production and musical recording of pop and rock with a compact, dense result, with high reverberation, which seems to be played by a band with many musicians; which in its beginnings was just what happened, since it was recorded in a room with an echo chamber and several musicians playing the same piece with the same or similar instruments, all in unison. The technique was created in the late 1950s by Phil Spector, and he developed it during the '60s by repeating and re-recording tracks in mixing and equalizing. The term wall of sound appears to be a newspaper name that appeared in Life magazine, although it was officially used for the first time and in advertising fashion by producer Andrew Loog Oldham. 2º_ In the anime Fairy Tail the character Cobra has a magical power whose name was translated as "wall of sound".
