Regular 
When cast on a wall, floor or some object, this spell “plays back” whatever sounds it may have “heard” in the past. The caster specifies the moment from which to start listening (“Let us listen to what was said in this room a year ago . . .”). Time modifiers (p. 81) apply. Each time this spell is cast for the same time period, there is a further -1 penalty to skill. A critical failure will wipe away the object’s “memory” of that time period.

Duration: 1 minute. 
Cost: 2 to cast. 2 to maintain. The magnitude of the Time modifier is added to the cost, so the spell costs 2 (2 + 0) for “within a minute,” but would cost 7 (2 + 5) for “4 to 40 days.” 
Time to cast: 10 seconds. 
Prerequisites: Magery 2, History, and Voices.

Item 
Staff, wand, or jewelry. Usable only by mages.  
Energy cost to create: 500.