Once in a Lifetime (Keith Urban song)

"Once in a Lifetime" is a song co-written and recorded by Australian country music artist Keith Urban. It was released in August 2006 as the first single from his 2006 album Love, Pain & the Whole Crazy Thing. Urban wrote this song with John Shanks.

On the US Billboard Hot Country Songs chart dated for the week of 2 September 2006, the song entered at No. 17, setting what was then a new record for the highest-debuting song in the history of the modern country music charts. The previous record was held by Eddie Rabbitt's "Every Which Way But Loose" and Garth Brooks' "Good Ride Cowboy", both of which debuted at #18 (in 1979 and 2005, respectively).

Track listing
Australian CD single
 * 1) "Once in a Lifetime" – 4:17
 * 2) ""Days Go By" (live) – 3:48
 * 3) "You'll Think of Me" (Jeremy Wheatley Mix) – 3:53
 * 4) "You're My Better Half" (live) – 4:05

Personnel
As listed in liner notes.
 * Keith Urban – lead and backing vocals, lead guitar, acoustic guitar, ganjo, EBow, piano
 * Tom Bukovac – rhythm guitar
 * Larry Corbett – cello
 * Eric Darken – percussion
 * Rami Jaffee – Hammond B-3 organ
 * Tim Lauer – synthesizer
 * Chris McHugh – drums, drum machine programming
 * Jimmie Lee Sloas – bass guitar
 * David Stone – upright bass
 * Russell Terrell – background vocals