"Love Is a Four Letter Word" was released on April 13, 2012. It reached number 2 on the "Billboard" 200, and the top 20 in 10 other countries. The lead single, "I Won't Give Up", debuted at number 8 on the "Billboard" Hot 100, and number 1 on the Digital Songs chart. It charted in 15 countries in total, and in October 2013 was certified 4x multi-platinum, for selling in excess of 4 million units. Mraz premiered the track live during his 2011 tour, before an official version had been released. It began to receive a lot of attention through live performances, as well as online. The official lyric video gained over 2.5 million views in its first 10 days on YouTube.