Songs from musical comedy show Glee are poised to storm the charts after the successful US show hit UK TV screens.
Two versions of soft rock anthem Don't Stop Believin' are set to chart high this weekend in the official singles chart.
The original 1980s version, by Journey, is set to climb the charts further after reaching No 7 last week, the Official Charts Company said.
Another version, by the Glee cast, is set to enter the top 20. This version of the song featured prominently in the trailer for the series, as well as in the final scene of the opening episode, shown on E4.
The song received an X Factor boost recently, going down well with judges and viewers when it was performed on the show by last year's winner Joe McElderry.
A string of other songs featuring in Glee also look likely to make a re-appearance, including Rehab, originally recorded by Amy Winehouse.
Official Charts Company managing director Martin Talbot said: "There is no doubting the impact that Glee is going to have on the chart this week, and possibly over the coming weeks.
"Glee is a new cultural phenomenon - and the music charts are reflecting this, just as they did in the US last year."
The hit show made a similar impact in the US when it premiered last spring, with several tracks from the show climbing into the chart after being screened.
The highest charting track was the Glee cast version of Don't Stop Believin' which peaked at No 4.