At Los Angeles’ new Cathedral of Our Lady of the Angels the 6,019 pipes of the organ are being tested and adjusted by a team of “voicers” at a rate of about 61 pipes per day. Dobson Pipe Organ Builders won the organ project by creatively incorporating pipes from the original organ into the new design and meeting space restrictions. The L.A. Times article contains a clear introduction to the workings of a pipe organ if you need to acquaint yourself with this most immovable of musical instruments and also provides the derivation of the phrase “pulling out all the stops”. At 2:30 p.m. each day silence descends in the cathedral which is still under construction, and the voicers go to work, tweaking each individual pipe to perfection. They are also fighting the building’s acoustics which need to project human speakers clearly, while providing reverberation for the organ. Adjustments will continue as an acoustics team fine tunes the cathedral’s speaking and musical voices into peaceful coexistence.