The most recorded early form of music is the middle ages (?)
In tonal Western classical music (music with a tonic key or "home key"), the most frequently encountered chords are triads, so called because they consist of three distinct notes: the root note, and intervals of a third and a fifth above the root note. ... A series of chords is called a chord progression
Answer:Bar lines specifies the no of beats in a bar. If the number of beats between bar lines is 4 then 4 is the number of beats in a bar.
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