"Umbrella" is a song by Barbadian singer Rihanna and features American rapper Jay-Z. It is the lead single from Rihanna's third studio album "Good Girl Gone Bad". It was written by Jay-Z, Terius Nash and Christopher Stewart. It was released on March 29, 2007 as a single and digital download. It was very successful worldwide reaching number one in numerous countries. The song is 4 minutes and 35 seconds long.