rockstar is a song by American rapper and singer Post Malone featuring Atlanta-based rapper 21 Savage. It was released on September 15, 2017, by Republic Records as the lead single from Malone's second studio album Beerbongs & Bentleys (2018). The song was written alongside Carl Rosen, Joey Bada$$, and producers Louis Bell & Tank God. Despite receiving mixed reviews by music critics, the track became the artists' most successful hit single to date, reaching number one on the US Billboard Hot 100, and reached the top spot in several other countries, including Australia, Canada, Greece, Portugal, Romania, Ireland, New Zealand, Sweden, Norway, Finland, Denmark and the United Kingdom. It became both Post Malone and 21 Savage's first number-one single in all the countries mentioned. The song was nominated for Record of the Year and Best Rap/Sung Performance at the 61st Annual Grammy Awards.
