Yes, altering harmony doesn't affect a key its in. Imagine that all the music in the world would use the same cadence, would that sound boring.[br][br]I-IV-V harmony you desribed is one of the most used, and recognizable. Especially in blues.
Yes, altering harmony doesn't affect a key its in. Imagine that all the music in the world would use the same cadence, would that sound boring.[br][br]I-IV-V harmony you desribed is one of the most used, and recognizable. Especially in blues.