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The bottom number represents what type of note gets one beat. This time signature means there are four quarter notes (or any combination of notes that equals four quarter notes) in every measure. A piece of music with this time signature would be in four four time or just in four four or common time.ounting in 4/4 Time 3/4 TIME SIGNATURE The 3/4 time signature means there are three quarter notes (or any combination of notes that equals three quarter notes) in every measure. A piece of music with this time signature would be in three four time or just in three four..
Key signatures are a type of musical notation that indicate which key the song is to be played in. But key signatures, despite the name, are not the same thing as key. Key signatures are simply notational devices; just as a note is the notational name for a pitch, key signatures are the notational names for keys.ey signatures are a type of musical notation that indicate which key the song is to be played in. But key signatures, despite the name, are not the same thing as key. Key signatures are simply notational devices; just as a note is the notational name for a pitch, key signatures are the notational names for keys.