«Who Knows» song by Avril Lavigne The track «Who Knows» appears in: Under My Skin Date: 2004/05/25 Track: 9 / 12 Under My Skin [DualDisc] Date: 2005/02/08 Track: 9 / 12 Under My Skin [Special Japan Tour Edition] Date: 2005/02/14 Track: 9 / 18 Under My Skin [Japan Bonus Tracks] Date: 2004/05/15 Track: 9 / 28 Under My Skin/Let Go Date: 2006/10/02 Track: 23 (Disc 2) / 28 Under My Skin Date: 2004/01/01 Track: 9 / 13 Under My Skin [Bonus Tracks & DVD] Date: 2005/05/23 Track: 9 / 23 Under My Skin [Bonus Track] Date: 2004/06/29 Track: 9 / 13 Musical Bases Date: 2005/01/24 Track: 11 / 13 Avril Lavigne «Who Knows» Music Video Watch more Avril Lavigne free music videos
![Under My Skin [DualDisc]](https://www.sortmusic.com/covers_yaA/avril-lavigne/2005_170_168_Under%2520My%2520Skin%2520%255BDualDisc%255D.jpg)
![Under My Skin [Special Japan Tour Edition]](https://www.sortmusic.com/covers_yaA/avril-lavigne/2005_170_170_Under%2520My%2520Skin%2520%255BSpecial%2520Japan%2520Tour%2520Edition%255D.jpg)
![Under My Skin [Japan Bonus Tracks]](https://www.sortmusic.com/covers_yaA/avril-lavigne/2004_170_170_Under%2520My%2520Skin%2520%255BJapan%2520Bonus%2520Tracks%255D.jpg)
![Under My Skin [Bonus Tracks & DVD]](https://www.sortmusic.com/covers_yaA/avril-lavigne/2005_170_170_Under%2520My%2520Skin%2520%255BBonus%2520Tracks%2520%2526%2520DVD%255D.jpg)
![Under My Skin [Bonus Track]](https://www.sortmusic.com/covers_yaA/avril-lavigne/2004_170_170_Under%2520My%2520Skin%2520%255BBonus%2520Track%255D.jpg)
