The band also borrowed from styles including reggae, bolero and calypso.

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McBride says he encourages his own band members to bring their own styles to the music.

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The authors of the paper go on to analyse the leadership styles of three different band leaders.

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Jagger formed the band in May, saying that he "wanted a convergence of different musical styles".

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Every band has its faults, and O'Brother's might be that it plays a variety of musical styles within the genre's frame.

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Performing as Stephen Kellogg and the Sixers, the band's most recent collaboration is 2009's The Bear, on which the singer again bridges different styles.

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