There is no single event that serves as a clear dividing line between the Middle Ages and the Renaissance. The transition of musical style between the two periods is very gradual, and as a result scholars do not agree on when the Renaissance begins. This link: http://www.ipl.org/div/mushist/ren/index.html provides a brief summary of some of the major traits of the Renaissance era.
Consensus among music historians—with notable dissent—has been to start the musical Renaissance era around 1400, with the end of the medieval era, and to close it around 1600, with the beginning of the Baroque period. The musical Renaissance then starts about a hundred years after the beginning of the Renaissance as understood in other disciplines. As in the other arts, the music of the period was significantly influenced by the developments which define the Early Modern period: the rise of humanistic thought; the recovery of the literary and artistic heritage of ancient Greece and Rome; increased innovation and discovery; the growth of commercial enterprise; the rise of a bourgeois class; and the Protestant Reformation. From this changing society emerged a common, unifying musical language, in particular the polyphonic style of the Franco-Flemish school.
The invention of the Gutenberg press made distribution of music and musical theory possible on a wide scale. Demand for music as entertainment and as an activity increased with the emergence of a bourgeois class. Dissemination of chansons, motets, and masses throughout Europe coincided with the unification of polyphonic practice into the fluid style which culminated in the second half of the sixteenth century in the work of composers such as Palestrina, Lassus, Victoria and William Byrd.
Relative political stability and prosperity in the Low Countries, along with a flourishing system of music education in the area’s many churches and cathedrals, allowed the training of hundreds of singers and composers. These musicians were highly sought throughout Europe, particularly in Italy, where churches and aristocratic courts hired them as composers and teachers. By the end of the 16th century, Italy had absorbed the northern influences, with Venice, Rome, and other cities being centers of musical activity, reversing the situation from a hundred years earlier. Opera arose at this time in Florence as a deliberate attempt to resurrect the music of ancient Greece.
Music, now increasingly freed from medieval constraints in range, rhythm, harmony, form, and notation was free to become a vehicle for new personal expression. Composer’s music became more expressive with the texts they were setting. Secular music and sacred music absorbed each’s techniques and styes. Popular secular expressive forms such as the chanson and madrigal spread throughout Europe. Courts employed virtuoso performers, both singers and instrumentalists.
More instruments: Many familiar modern instruments (including the violin, guitar, lute, and keyboard instruments), developed into new forms during the Renaissance responding to the evolution of musical ideas, presenting further possibilities for composers and musicians to explore. Modern woodwind and brass instruments like the bassoon and trombone also appeared; extending the range of sonic color and power.
Harmony: During the 15th century the sound of full triads became common, and towards the end of the 16th century the system of church modes began to break down entirely, giving way to the functional tonality which was to dominate western art music for the next three centuries
Enormous diversity:: From the Renaissance era both secular and sacred music survives in quantity, and both vocal and instrumental. An enormous diversity of musical styles and genres flourished during the Renaissance, and can be heard on commercial recordings in the twenty-first century, including masses, motets, madrigals, chansons, accompanied songs, instrumental dances, and many others. Numerous early music ensembles specializing in music of the period give concert tours and make recordings, using a wide range of interpretive styles.
Follow this link Renaissance – Wikipedia to read more about the Renaissance in Wikipedia.
Renaissance Instruments:
This link http://www.music.iastate.edu/antiqua/instrumt.html takes you to some of the varied sounds of the renaissance instruments. Note that they How do they differ in sound from our present day instruments. Much music written during this period is often polyphonic in texture. Thus composers favored instruments which would stand out. Blended sounds in the Renaissance were not always the objective Harmony ( chords) evolved, in later periods. The resulting homophonic textures favored instruments with more blended sounds..
This instrumental work https://youtu.be/5SvEttR6HTY is a fine example period Instruments from the Renaissance with a medieval touch.
https://courses.lumenlearning.com/vccs-tcc-mus121-1/wp-admin/post.php?post=94&action=edit
Modified by Robert Ford