De Rosa are noted for their use of guitar-based indie rock combined with Henry's personal lyrics sung in a Scottish accent.

In recent performances De Rosa have used more synthesisers and drum machines in their live set, their sound moving away from the guitar-based rock of their debut material towards a fusion of electronic and traditional styles.

Since 2007 the band has been a five piece (brothers James and Neil Woodside on bass and drums respectively, with Chris Connick on guitar and Andrew Bush on piano/keyboards).

De Rosa signed in 2004 to Lanarkshire label Gargleblast Records, run by Shaun Tallamy & Andy Miller.

It was following the release of their debut single ("Camera"/"All Saints Day") in August 2004 that they first attracted interest from DJs including the late John Peel and Steve Lamacq.

Released in the UK on 19 June 2006, Mend was voted number 16 in British music magazine Mojo's top 50 albums of 2006.

The kind of parochial majesty you might encounter if The Pixies reworked The Go-Betweens' "Before Hollywood" for a documentary about the social history of Lanarkshire...[2]With James Woodside (bass) and Chris Connick (guitar) joining as permanent members after the completion of Mend, the four piece De Rosa spent many months touring and promoting the album.