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The Pleasure Principle, released in 1979, marked Gary Numan's solo debut after departing from the band Tubeway Army. This album is widely regarded as a pioneering work in the development of electronic and synth-pop music. Known for its catchy melodies, futuristic themes, and Numan's distinctive vocals, The Pleasure Principle became a commercial success, solidifying Numan's status as a prominent figure in the electronic music scene.