Saab 9-5 overheats. In the United States OnStar was available, and provided as standard equipment in selected 9-5's from 2001 onward. The 9-5 had various comfort features both as standard and cost options over the years. While early models frequently had dash mounted cassette decks, CD changers were standard features on many cars and in-dash satellite navigation was also available. Factory-fitted phone kits were similarly optional. Many models featured leather or part-leather upholstery and both front and rear heated seats were also available. A few models were shipped with the optional ventilated seats. Cruise control was available on various models and xenon
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.