Thoughts on certain points: perhaps if the cd player was wrapped in a
lead protective bag this would prevent or at least limit electro-
magnetic radiation? One small speaker or such would be attached to a
crown board thus transmitting the vibrations into the brood body.

Choice of music (ok so maybe not all Mozart)would be of a type without
great dramatic change (eg the 1812 o/t) or too speedy but a smooth
even type. All suggestions of this type will be looked at.

A contol hive will be set up. Having the same genetic parentage is
about as far as I can go.