First recorded (as “Rudy, A Message to You”) by Dandy (1967).
Hit version by The Specials (UK #10/NETH #22 1979).
Also recorded by Barenaked Ladies (demo 1988), Amy Winehouse (2008).
From the wiki: “‘A Message to You, Rudy’ is a 1967 rocksteady song by Dandy Livingstone. The song, originally entitled ‘Rudy, A Message to You’ later achieved broader success when, in 1979, The Specials’ cover reached #10 in the UK Singles Chart. Veteran trombone player Rico Rodriguez played on both Livingstone’s 1967 and The Specials’ 1979 recordings.