An example of this comes from an often cited story of Milligan filling his two socks with custard in the Camden Theatre canteen, in an attempt to achieve a squelching effect. Milligan asked the BBC canteen ladies to make some custard; they thought he must have some stomach trouble so lovingly made him a fresh custard – which he accepted with thanks and immediately poured into his sock, much to their horror. Secombe recalled "Back in the studio, Spike had already placed a sheet of three-ply near a microphone." One after the other, he swung them around his head against the wood, but failed to produce the sound effect he was seeking ("So, a sock full of custard and no sound effect!").:205 Secombe noted that "Spike used to drive the studio managers mad with his insistence on getting the sound effects he wanted. In the beginning, when the programme was recorded on disc, it was extremely difficult to achieve the right sound effect. There were, I think, four turntables on the go simultaneously, with different sounds being played on each – chickens clucking, Big Ben striking, donkeys braying, massive explosions, ships' sirens – all happening at once. It was only when tape came into use that Spike felt really happy with the effects." An FX instruction in one script read "Sound effect of two lions walking away, bumping against each other. If you can't get two lions, two hippos will do". Over time, the sound engineers became increasingly adept at translating the script into desired sounds, assisted from the late 1950s onwards by specialists in the BBC's newly formed Radiophonic Workshop.:205 Milligan's relationship with BBC managers preparing for the recording of episodes was often acrimonious and resulted in rows, and Milligan later agreed that he was a diva during this time, adding "I was trying to shake the BBC out of its apathy. Sound effects were a knock on the door and tramps on gravel– that was it, and I tried to transform it.". Many of the sound effects created for later programmes featured innovative production techniques borrowed from the realm of musique concrète, and using the then new technology of magnetic tape. Many of these sequences involved the use of complex multiple edits, echo and reverberation and the deliberate slowing down, speeding up or reversing of tapes. One of the most famous was the legendary "Bloodnok's Stomach" sound effect,