One of the mysteries of the English language finally explained.
Cuban son music, especially a form featuring an extended passage of musical call and response over a flowing rhythm produced by a combination of percussion instruments; the dance associated with this; a song or dance in this style.
1940s; earliest use found in Billboard. From Cuban Spanish son montuno from son + montuno wild, rustic.
son montuno/ˌsəʊn mɒnˈtuːnəʊ//ˌsɒn mɒnˈtuːnəʊ/
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