Instrumental Duet,Piano C Instrument - Level 2 - Digital Download SKU: A0.880851 By Colbie Caillat. By Colbie Caillat and Jason Reeves. Arranged by Marco Polo C. Ignacio. Pop. Lead Sheet / Fake Book. 2 pages. MARCO POLO IGNACIO #6111311. Published by MARCO POLO IGNACIO (A0.880851). Bubbly is a song by American singer Colbie Caillat from her debut album, Coco (2007). Written by Caillat and Jason Reeves and produced by Mikal Blue, the song was released as the album's lead single on May 15, 2007. It remains Caillat's biggest hit in the US to date, and her only single to reach the top 10 of the Billboard Hot 100. Internationally, Bubbly reached number one in Australia and became a top-ten hit in several European countries, including Belgium, Germany and Norway.