Kings Of Leon's new offering Come Around Sundown is expected to become the fastest-selling album of the year so far.
According to Thursday's Official Albums Update, the record has already sold more in three days than most albums have in a week.
Only one album - Eminem's Recovery - sold more in an entire week during 2010, meaning the band are on course for number one in the UK charts on Sunday.
The band's closest challenger is Robbie Williams' In And Out Of Consciousness, which looks to be dropping to number two in the chart.
In the singles chart, The Wanted's new track Heart Vacancy is challenging Bruno Mars' Just The Way You Are for the top spot.
The other big new entries of the week are Katy Perry's Firework and N-Dubz Best Behaviour, which are on course to enter the top 10.