If your favourite for X Factor victory this year is Frankie Cocozza (proud owner of the tattooed bottom), then you'll already be slightly smitten with this American rock anthem after the shaggy-haired pop wannabe performed the track during this year's talent show auditions.

Alternatively, 'Iris' may ring a bell having charted previously in 1999 and 2006 when previously released. This 13-year-old track is currently enjoying the same X Factor boost enjoyed by Adele's 'Make You Feel My Love' during the 2010 run, when the Brit star's aging soul hit became a chart regular for months on end. Will we still be swooning to the Goo Goo Dolls come the turn of 2012? Well it's something of an overlooked rock classic, so we wouldn't count it out!

Originally charting no higher than No.26 in the UK, it's recent revival has seen the track hit the top three, and despite its age, still sounds as fresh and emotive as it did in the last millennium. The track is a growling soft-rock anthem, reminiscent of Bon Jovi at their most heartfelt or Nickelback at their most listenable, with singer John Rzeznik showcasing a stunning rock vocal that has helped the band shift nearly nine million albums in the US. Not bad going for a group of relative unknowns on these shores.

An epic and memorable chorus is the track's crowning glory, the reason 'Iris' enduring popularity and its inclusion on this year's X Factor. Expect to hear a lot more of this song before the end of this year's weekend singing-spectacular...