This week’s guest on the Weekly Interval is my favorite interval, the ascending Perfect 4th. It tender, mournful, sunshiny sound is quite complex. Just look at the partial list of songs below that start with this interval. Play the interval on your instrument. Listen to it. The Perfect 4th has a lot of emotional content. Remember to spend a week with this interval, play it in different keys, and listen for the melodies of familiar songs to jump out as you practice listening to the Perfect 4th. If you do hear the melody to a song that starts with this interval other than those listed below post it in the comments section.