single harmonic
71Gear — For the gear like device used to drive a roller chain, see Sprocket. This article is about mechanical gears. For other uses, see Gear (disambiguation). Two meshing gears transmitting rotational motion. Note that the smaller gear is rotating… …
72Quartal and quintal harmony — In music, quartal harmony is the building of chordal and melodic structures with a distinct preference for intervals of fourths . (.Use of the term arises from a contrast, compositional or perceptual, with traditional tertian harmonic… …
73Nonlinear optics — (NLO) is the branch of optics that describes the behaviour of light in nonlinear media, that is, media in which the dielectric polarization P responds nonlinearly to the electric field E of the light. This nonlinearity is typically only observed… …
74Bleeding Love — Infobox Single Name = Bleeding Love Artist = Leona Lewis Album = Spirit B side = Forgiveness Released = Start date|2007|10|19|df=yes (see release history) Format = CD single, digital download Recorded = 2007 Genre = Pop, R B Length = 4:24 (Album… …
75Blues — This article is about the music genre. For other uses, see Blues (disambiguation). Blues Stylistic origins African American folk music Work song Spirituals Cultural origins Late 19th century, southern United States Typical instruments …
76Chord progression — IV V I progression in C  Play (help· …
77Inverter (electrical) — An inverter is an electrical device that converts direct current (DC) to alternating current (AC)[1]; the converted AC can be at any required voltage and frequency with the use of appropriate transformers, switching, and control circuits. Solid… …
78Drone music — Stylistic origins Indian classical music Experimental music[1] Minimalist music[2] 1960s experimental rock[3] …
79music, Western — Introduction history of Western music from ancient times to the present. All ancient civilizations entered historical times with a flourishing musical culture. That the earliest writers explained it in terms of legend and myth is… …
80Demetrio Stratos — Birth name Efstratios Demetriou Also known as Demetrio Stratos Born April 22, 1945(1945 04 22) Alexandria, Egypt Died June 13, 1979 …
