Percentage of unique words in lyrics. Average word length. Frequency of "love", "heart" and "baby". These were the criteria used by a US study of boy, girl and teen bands. The researchers picked albums by four of the biggest pop acts around - Backstreet Boys, Britney Spears, Christina Aguilera and 'N Sync - and pitted them against an album by Pink Floyd, their musical opposite.
"there is a scientifically proven relationship between how bad a band is and the number of times they sing the word 'baby' "
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