There is an on-going controversy about the precision of the frequency map in mouse auditory cortex. While global frequency maps are universally accepted, local frequency organization has been reported by some to be heterogeneous and by others to match precisely the global tonotopic location. Here Prof. Eli Nelken will describe the history of this controversy and show recent results that demonstrate the interplay between global order and local variability in the tonotopic map of mouse primary auditory cortex.