1. An apparatus, comprising: at least one processors; and at least one memory including computer program code, the at least one memory and the computer program code configured to, with the at least one processor, cause the apparatus to perform at least the following; detect a change in position of a body member of a performer relative to a performance element of a performance object with which an event is to be performed; generate a signal dependent on the detected change in position of the body member; record the signal so that a first sensory cue can be determined to indicate the change in position of the body member relative to the element of the performance object during a learning session; determine the first sensory cue dependent on the recorded signal; and apply the first sensory cue to indicate to a user during the learning session the change in position of the body member of the performer during the performance of the event, the first sensory cue being effective for stimulating a first processing center of a brain of the user, wherein the first sensory cue is an applied electrical signal dependent on the recorded signal effective to stimulate at least one of muscles and nerves of the user during the learning session to indicate to the user the position of the body member of the performer during the performance.
5. An apparatus according to claim 1 : wherein the applied electrical signal causes a sensation or contraction in the muscles of the user.