Thanks Neale. Yes that is the man and I have collected as much information on Arthur as I can find - the service record and attestation pack (which was very informative). You have found his father Benjamin too. He set off from Plymouth for Australia at 16 and didn't return for 5 years! I've looked at the ships movements through the Australian papers and the desertion rate was pretty high!
On the subject of the bands, I can see that at Jutland, there were 16 formal bandsmen aboard HMS Duke of Edinburgh which presumably would have been enough for a decent band! Whether anyone else could join in, I have no idea...