Complex sentence: By November 1994, the band had released its first album, the self-titled "Rivermaya", and its first single, "Ulan (song)" (Azarcon/Blanco) shot to the top of the charts.
Split into simpler sentences: By November 1994, the band had released its first album, the self-titled "Rivermaya". Their first single, "Ulan" shot to the top of the charts.