Every time I hear the two notes of certain Samsung texts I hear Bemsha Swing by Thelonious Monk.

Every time I hear my the opening tone of my iPhone I hear Care of Cell 44 by The Zombies.

Every time i hear a perfect 4th I hear  Here Comes The Bride.

Every time the Toronto subway plays 3 notes designating the next station I hear the theme song from Jesus Christ Superstar.