R
relative pitch - tuning an instrument to itself or tuning one instrument to another. If there is no access to a tuner such as an electronic tuner, tuning fork or digital piano you can tune to a random tone. In most cases a guitar may have only one or two strings which are not in tune so you can tune those to the majority of strings which are in tune.
royalties - songs or music can be registered with a collection agency such as SOCAN, ASCAP and BMI. These companies monitor media like radio and television as well as live performances in certain types of concerts and live venues for music that has been registered and will collect fees for any performance of these songs. This type of royalties are called performing rights and are usually divided 50/50 for the author/composer and publisher.
reciprocal agreements - Here is an explanation by SOCAN (Society of Composers, Authors and Music publishers). A reciprocal agreement is basically a two-way agreement. At SOCAN, we have reciprocal agreements with over 100 different performing rights organizations (PROs) around the world. These agreements allow foreign societies to administer your repertoire in their territories and send all royalties earned by you to SOCAN. SOCAN then pays the monies directly to you. In return, we do the same for them in our territory. SOCAN is one of only a few PROs around the world that does not take overhead off your incoming foreign royalties.
www.socan.ca
rock - the evolution of popular music from the 1940's swing, country, cajun, zydeco, and blues era became the rock and roll, and rhythm and blues of the 1950's, which in turn evolved to rock music in the 1960's. Since then, rock music has encompassed such genres as folk rock, hard rock, jazz rock fusion, heavy metal, metal, latin, country rock, blues rock, disco, punk, grunge, techno, and trance. Rhythm and blues went on to birth musical forms like soul, funk, rap and hip hop.
rhythm - generally refers to the style of the beat, or accompaniment of a song. Variations of rhythm can be described as up tempo rock and roll, slow blues, shuffle, reggae, funky, or Latin rhythms such as bossa nova, samba etc. There are also poly rhythms from Africa which combine two or more time signatures. Rhythm can also mean the rhythm section of an ensemble such as rhythm guitar or bass and drums.
rave - a large gathering of people dancing to trance music, usually organized with very short notice at an impromptu location.
rhythm section - part of an ensemble, band or orchestra usually consisting of bass, drums, percussion, rhythm guitar. Other instruments playing a rhythm part of the music may also be considered as part of the rhythm section.
