The song was written by Lavigne, Kroeger and David Hodges, and released on October 15, 2013, by Epic Records as the album's third single.

A music video was released on October 15, 2013, and it shows Lavigne roaming the halls of an abandoned mansion, with Kroeger's appearance being channeled through an elderly yardman, only to be seen as his true self through mirrored and tablet-assisted images.

"Let Me Go" features vocals from Lavigne's husband, Nickelback frontman Chad Kroeger,[1] whom she married in July 2013.

[3] The song was first written in March 2013 and was originally going to be about letting go of someone, but after Lavigne's and Kroeger's relationship started growing, they rewrote the last chorus to reflect it.

[8] Carl Williott of Idolator highlighting "the most obnoxious aspects of Avril’s snotty pop and Chad’s rock-by-numbers mookery can breathe a sigh of relief.

"[9] Its instrumentation features a piano, a string section, an acoustic drum kit, and electric guitars and bass.

Chad's verse, "You came back to find I was gone / And that place is empty, like the hole that was left in me",[10] brings a turn to the lyric's meanings.

[11] The song was written on the first day Lavigne started working with Nickelback frontman Chad Kroeger on songwriting for her fifth album.

"[13] John Walker of MTV Buzzworthy wrote the song, "offers all the emotional guidance you may need in a fragile post-breakup state.

"[11] Joseph Apodoca of On the Record Carpet wrote that the song "is reminiscent of many of Lavigne's biggest power ballad hits, including 'Losing Grip,' 'Nobody's Home' and 'Keep Holding On'.

"[10] Elliot Robinson of So So Gay wrote that in "Let Me Go", is where Kroeger's musical stylings are most noticeably felt," calling "infectious yet truculent pop-rock and earnest balladeering.

Jolly continued to say that the song was a "big, brooding, Evanescence-esque power ballad will be impossible for radio programmers to ignore.

It starts off showing an old man (played by Herman Sinitzyn)[29] sweeping leaves outside a mansion, before the music kicks in.

The clip shows Lavigne representing a ghost of a pianist, alone in the (presumably now empty) mansion without lighting and with covered furniture, attempting to get in touch with the man she loved.