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pipe organ

The pipe organ is a keyboard instrument that originated in ancient Greece, as the hydraulis. The hydraulis was powered by water displacing air, thus creating an air supply to play the pipes.

Modern organs are fully pneumatic, meaning that there is a blower or bellows to pressurize them. When you press a key or pedal on the organ, a valve is opened, thus admitting air into the pipe to make it speak.

The connection from the key to valve can be established any number of ways. Traditionally, when you pressed a key, mechanical linkage pulled the valve open. Also you may encounter direct electric action, like Wicks organs used. This used an electromagnet to open the valve. There is also electro-pneumatic, where an electromagnet lets air into an actuator which pulls the valve open.

Organs have different stops to control the voices. When no stops are pulled, the organ will make no sound when keys are pressed. To make sound, one must pick one or any number of stops to play. Each stop consists of one or more ranks of pipes. Some stops may make use of parts of other ranks. An eight foot stop is in unison. The not you play is the not that comes out. When you pull out a four foot stop, it sounds an octave higher, and a two foot stop, an octave higher still. You can combine these stops to make a principle chorus.

There are other kinds of stops, like mutations, which make a not that is not unison or octave, and thus create a parallel melody, which can add interest or create new sounds. There are reeds, which can play sounds like trumpets and oboes. These pipes are not like whistles, but have a beating metal tongue to make the sound out a resonator.

Each organ may have one or more manuals or keyboards. Each one controls a different part of the organ. There may be a great division, the main part. There could be a positive division, which is a smaller division. Some divisions have shades in front of them to control the volume. These shades are controlled by expression pedals.

Organs also have pedals, so the organist can play the base line with their feet, freeing hands to to the alto, soprano, and tenor parts.

And remember, an organ is only similar to a piano in the sense that it has a keyboard.

Rob gave a wonderful pipe organ recital at the Methodist church last night.

by the_organist March 27, 2009

48๐Ÿ‘ 4๐Ÿ‘Ž


organic chemistry

A discipline of chemistry which involved the study of the structure, reactions, compounds, et. al. of organisms and other organic compounds that contain carbon. Often refered to simply as "organic" or "o-chem." Considered by many to be the number one ass-raper on college campuses.

After that first organic chemistry test Little Billy decided that a degree in chemistry wasn't worth it.

by Matt October 10, 2005

569๐Ÿ‘ 87๐Ÿ‘Ž


Reproductive Organ

Another name man's penis, using a musical metaphor.

Referring to a sexy woman, "I'd let her play a tune of my reproductive organ any day."

by maninboulder October 5, 2005

108๐Ÿ‘ 21๐Ÿ‘Ž


organic conversation

it is a conversation that just flows without any awkward silences or without one of the parties constantly trying to keep the conversation going

I crave an organic conversation right now. I'm so tired of being trying to get people to talk

by idoogo August 2, 2017


organized chaos

A term used to describe an area, room, etc. which looks extremely messy, but the owner knows exactly where everything is.

MOM: Look at this room! It's a mess!

KID: No it's not, it's organized chaos.

by Chrissy Robinson April 24, 2006

212๐Ÿ‘ 35๐Ÿ‘Ž


Organized Confusion

Messy, splintered into 1000 pieces, all over the place, yet meticulously together and beautifully chaotic. A description of pivitol points in the music of the legendary band Nirvana. "Organized Confusion" is the name of the demo recorded by Kurt Cobain in December 1982 at his Aunt Mari Earl's house. Today is February 20, 2015. Kurt Cobain was born on February 20, 1967, and died by self-inflicted gunshot wound to the head on April 5, 1994. He would have been 48 years old today.

Equipped with his electric guitar, Earl's bass, an empty pink Samsonite suitcase and a set of wooden spoons, 15 year old Kurt Cobain set about laying down tracks on Earl's TEAC A-2340 recorder. He named the resulting demo Organized Confusion.

by KImCobain February 20, 2015

19๐Ÿ‘ 1๐Ÿ‘Ž


organized chaos

A situation or place that seems to be in chaos, but has an underlying organization and pattern which is evident to those involved in the situation

Mom: Clean up your room, NOW! You cant find anything in this mess..

Child: No Mom, YOU cant find anything because you just see a mess. I know where everything is. Its organized chaos

by wordwiz March 26, 2008

80๐Ÿ‘ 12๐Ÿ‘Ž