He is married to his music career, rarely having time for anything else.

married 的原意是"结婚的、已婚的"，在这里用作比喻，表示"全身心投入的、与...紧密结合的"。 这个比喻用法将事业比作婚姻伴侣，强调对音乐事业的专注和奉献程度就像婚姻关系一样紧密。