Eurovision and talent-show singles edge into lower reaches of chart.

Clearly not another Umbrella, Rihanna's second number one, Take A Bow, suffers a 13.3% dip in sales to 35,561 on its second week at the summit. That is one of the lower number-one sales tallies of the year - it has been lower only three times in the year's previous 21 weeks - but with a strong top five all selling more than 20,000, a top 15 in which everything sold more than 10,000 and 141 singles selling more than 1,000 copies, overall sales in the sector grew 7.8% to 1,987,046 - their highest level for 10 weeks, and their third highest of the year.

Andy Abraham's Even If dips from its debut position of 67 to 97 (1,539 sales), confirming it as the lowest charting UK Eurovision entry for 19 years. The last one to fare worse was Live Report's Why Do I Always Get It Wrong, number 73 in 1989.

Dima Bilan's song Believe is not yet available as a single but two songs from the competition join Even If in the Top 200 this week - Greek entry Secret Combination by US-born Kalomoira secured 12 points from the UK jury, and debuts at number 71 (2,115 sales), while France's Sebastien Tellier debuts at number 106 with Divine (1,349 sales).

The seventh season of American Idol brought victory for David Cook 12 days ago, and admirers of the 25-year-old Texan purchased nearly 1m ...