Mus Mulyadi and Waljinah are iconic figures in Indonesian keroncong music, each bringing a unique flair to the genre. Mus Mulyadi, born in Surabaya on August 14, 1945, earned the moniker "Buaya Keroncong" (Keroncong Crocodile) for his captivating performances. His hits like "Kota Solo" and "Jembatan Merah" have left a lasting impact on the music scene. Waljinah, hailed as the "Ratu Keroncong" (Queen of Keroncong), was born in Solo on November 7, 1945. She gained widespread acclaim with her rendition of "Walang Kekek," a song that popularized Javanese keroncong across Indonesia. Their collaboration, notably on tracks like "Ning Nong Neng Gung," showcases a harmonious blend of their distinctive styles, enriching the keroncong tradition and captivating audiences nationwide.