The stately Emperor was made in Belgium by Mortier before the turn of the century. At that time it played from a pinned cylinder called a "cob." The cardboard books of music it now plays from are made of a special material from Sweden with flax in it to keep the perforations sharp and clear. Instruments played by this machine include 418 pipes, bass drum, cymbal, snare drum, double castanets and 22 xylophone bars. Its effect is similar to that of a 60 piece orchestra.
The following is a list of instruments as they are controlled by the "brain" or keyframe as shown on the original gamut book; mandolin, piston, xylophone, trommel snare and cast, tremelo, gross caisse, klein fluit, groote fluit, harmonium, violincelle, saxifoon, trombon, voisc humaine fixe, voisc celeste, violon. Every piece of this organ was hand made-even the brass vox humnan pipes were swedged and flared by hand.
The ingenious tremelos will produce, with the vox humana, violin, diapason, and melphone, a marvelous sound not unlike the human singing voice. Songs include:
1. DOWN YONDER
2. SMILES
3. I'M LOOKING OVER A 4 LEAF CLOVER
4. SAN ANTONIO ROSE
5. I'M FOREVER BLOWING BUBBLES
6. HIGH SCHOOL CADETS
7. REAL GOOD POLKA
8. THE SKATER'S WALTZ
9. WHEN THE SAINTS GO MARCHING IN
10. OH YOU BEAUTIFUL DOLL
11. TWELTH STREET RAG
12. ROSES OF PICADILY
13. CRUSING DOWN THE RIVER
14. JINGLE BELLS
15. TIC TOC POLKA