Ozzy Osbourne and Lady Gaga's songs leave fans scratching their heads - the singers have topped a poll of acts whose lyrics people find most difficult to make out.
Veteran British rock star Ozzy takes first place in the list, followed by eccentric Born This Way singer Lady Gaga.
Boombastic singer Shaggy, Jamaican reggae artist Sean Paul and US rapper Jay Z complete the top five.
The top 10, compiled for music streaming service Blinkbox Music, also features US chart-toppers Rihanna and Miley Cyrus, as well as the late singer and guitarist Jimi Hendrix, Purple Rain singer Prince and Bob Dylan.
Researchers questioned 2,000 adults for the poll.
:: Artists whose lyrics are most difficult to understand
1. Ozzy Osbourne
2. Lady Gaga
4. Sean Paul
7. Miley Cyrus
8. Jimi Hendrix
10. Bob Dylan