THATS MY CORNERBACK '<| sep |> Should ' ve held out for gronk instead of playing Ebron . <| sep |> HOW BOUT SOME PLAYOFF FLAVORED KOOLAID , FRIENDS <| sep |> The pedals provide the bass notes . The main extra difficulty that comes with playing an organ rather than just a piano comes from coordinating your feet with your hands . Once you have mastered that , the rest falls into place much more quickly . There are those two expression pedals as well , the ones just above the main pedal board . The one on the left opens shutters around some of the pipes to change the volume , and the one on the right is a crescendo pedal it allows you to add different sounds in as you are playing . Another way of doing this is with pistons , which are dotted around the entire instrument for both feet and hands . Other differences include the touch of the keys . Different organs vary , but the keys are not weighted in the same way and are not pressurevelocity sensitive . I . e . pressing a key gently will be just as loud as pressing it very hard , so all your dynamics have to come from the use of different stops , which is an art in itself . If you are interested in learning more , this videoQkcUuAjhwvM gives a great overview about how pipe organs work . or you can ask me .