What is "kroncong"

Kroncong (pronounced "kronchong"; , ) is the name of a ukulele-like instrument and an Indonesian musical style that typically makes use of the kroncong (the sound chrong-chrong-chrong comes from this instrument, so the music is called keronchong), the band or combo or ensemble (called a keronchong orchestra) consists of a flute, a violin, a melody guitar, a cello in pizzicato style, string bass in pizzicato style, and a female or male singer.