During the 20th century organ builders became more and more interested in returning to some of the ideas of the Baroque and Classical periods. Many organs now have electric action, but a good mechanical action has the advantage that the player feels more close to the instrument that he is playing. Some large 20th century organs are able to play many kinds of organ music. Other 20th century organs were built as copies of Baroque or Classical instruments, but this means these instruments are mainly suitable for Baroque or Classical music, and are not well suited for music of the 19th and 20th centuries.