"This Is The Life" was composed by Matthew Gerrard with the aid of Robbie Nevil and Jay Landers. Gerrard co-wrote a total of six songs on Hannah Montana while Nevil co-wrote four and Landers two. A karaoke version appears on Disney's Karaoke Series: Hannah Montana, while a remixed version appears on Hits Remixed. The song first premiered on Radio Disney on 2006 in order to promote the series. "This Is The Life" is pop song with a length of three minutes and fifteen seconds. The song incorporates various teen pop styles within its music, according to Allmusic. The song is set in common time and has a moderate tempo of 120 beats per minute. It is written in the key of E major and Cyrus' vocals span two octaves, from B3 to C♯5. "This Is The Life" follows the chord progression of E-A. Chris William of Entertainment Weekly perceived the lyrics of "This Is The Life" pertained to individualism, noting the lines "I'm individual / I'm not like anyone".
Reception
Critical reception
Chris William of Entertainment Weekly described "This Is The Life"'s style as a simultaneous mimic of the styles of Avril Lavgine, Ashlee Simpson, and Britney Spears, which he felt contracted its lyrical theme.
Chart performance
As it was not released as a single, "This Is the Life" received exclusive airplay on Radio Disney, thus its chart appearances consisted mainly of digital downloads. On the week ending August 5, 2006, the song debuted at number ninety-two on the Billboard Hot 100; succeeding the appearance, the song dropped from the chart. Following the release of the Hannah Montana soundtrack, the song entered Billboard's Hot Digital Songs Chart at number forty-four, which led to a reappearance on the Billboard Hot 100 on the week ending November 11, 2006. The record was later duplicated by Taylor Swift. The song also peaked at number sixty-three on the now-defunct Pop 100 Chart. "This Is the Life" peaked at number sixty-five on the Hot Canadian Digital Singles Chart, but failed to enter the Canadian Hot 100.
Live performances
Cyrus, costumed as Montana, first performed "This Is The Life", along with four other songs, at the concert taping for the first season of Hannah Montana. The performance was later released as the song's music video on April 10, 2006 on Disney Channel. Cyrus also performed the song on twenty dates in the fall of 2006, when she opened for the Cheetah Girls' 2006 and 2007 concert tourThe Party's Just Begun Tour.