The Dad's Army Theme tune was penned by Jimmy Perry and Derek Taverner in 1969. The feel of the tune and the sentiment in the lyrics are so 'right' that many believe they are listening to a real war-time song. Bud Flanagan sang the lyrics, it was his last song recorded before he died. There have been many versions recorded at different stages, including one by Arthur Lowe.

The 'Dad's Army Choir' produced two 7" singles.
This choir consisted of the main seven members, with the addition of Hodges (Bill Pertwee) for 'We Stood Alone'. None made an impact on the British Hit Parade, although 'We Stood Alone' seemed to be played more often.
The 'Dad's Army March' tune featured in the Feature Film. As far as I'm aware they have not been included on any LP/CD or compliation release.

The 'B' Side of the single was 'Down Our Way' (Worth). This was sung by all in the style of Flanagan & Allen.(It pains me to listen to it, but I'll eventually get around to noting the lyrics!)