I think the answer is President Monroe
Scott Joplin was a very popular and successful Ragtime songwriter in the 1800s. He was known as the "King of Ragtime" and composed 44 Ragtime pieces, as well as two ballets, and a Ragtime ballet. The other three artists were popular musicians in the 1950s and 1960s and did not record in the Ragtime era or style.
An amendment can be proposed by either a two-thirds vote of both houses of Congress or by a constitutional convention called by Congress at the request of the legislatures in two-thirds of the states. The constitutional convention method has never been used to propose an amendment.
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