The Eight Little Fugues, each originally paired with preludes are often performed in churches because of their technical ease and brevity. They have finally been attributed to Bach by most scholars after a number of years of doubt. They are less technically difficult than the full-blown fugues of Bach, but still equally full of beauty and "commanding mastery." They are all less than 3 minutes in length with four in major keys and four in minor, appropriate for moderately advanced performers. These may be performed in a quartet or choir setting with multiple performers on a part.