Ranch sorting then the team is disqualified. Ranch Sorting contestants are rated from a #1 (Beginner) to #9 (professional) based on their ability level. Classifications of #1 are Beginners, #2 are Rookies, #3 and #4 are for participants of Novice ability, classifications of #5 and #6 for amateur participants and classifications of #7, #8 and #9 are for Open or Professional participants. There are several other equestrian sports related to Ranch Sorting. Team Penning is similar competition except that a team of three riders on horseback have from 60 to 75 seconds to separate three cattle from a herd and put them
7-limit tuning Young's "The Well-Tuned Piano", Ben Johnston's String Quartet No. 4, and Lou Harrison's "Incidental Music for Corneille's Cinna". The Great Highland Bagpipe is tuned to a ten-note seven-limit scale: 1:1, 9:8, 5:4, 4:3, 27:20, 3:2, 5:3, 7:4, 16:9, 9:5. In the 2nd century Ptolemy described the septimal intervals: 7/4, 8/7, 7/6, 12/7, 7/5, and 10/7. Those considering 7 to be consonant include Marin Mersenne, Giuseppe Tartini, Leonhard Euler, François-Joseph Fétis, J. A. Serre, Moritz Hauptmann, Alexander John Ellis, Wilfred Perrett, Max Friedrich Meyer. Those considering 7 to be dissonant include Gioseffo Zarlino, René Descartes, Jean-Philippe Rameau, Hermann von Helmholtz, A.