The new Mühleisen organ in St. Johannes is a one-of-a-kind French Romantic instrument in this region. It blends beautifully with the newly renovated interior of the church and adds to the overall artwork inside the church. The cultural variety of Leonberg and beyond will now be strongly impacted by the existence of this instrument. Its delicate action offers artful organ playing; with its tonal resources it enables the organist to use almost limitless variations.