The answer would be eight-track sound recording.
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What was specific about his painting technique was that he would always try to involve the viewer of the painting by drawing eyes and the positioning of his characters in such a way that it always seems as if they're maintaining eye contact with the audience. This was done using various perspectives and is kind of like an illusion, similarly to how the Mona Lisa is painted.
Answer:
Entertain royalty.
Explanation:
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From an artist named iain macarthur
