Bowie hails Johnasson's Waits covers

Veteran rocker David Bowie has heaped praise on actress Scarlett Johansson for her album of Tom Waits covers, branding her vocal talents "mystical".

The legendary pop star provided backing vocals for two tracks on the disc, 'Fannin' Street' and 'Falling Down', and insists Johansson's skills behind the mic were almost perfect.