Creating "Melody and Chord Arrangements", in theory are as simple as harmonizing the melody with a chord. Which is playing a chord that has the melody note as the top note of the chord voicing. In practice it is a little more involved, but not much more.

Playing Melodies, Licks, Riffs, Motifs, and Single Note Lines by ear is all about getting your ear to recognize intervals and train the fingers to follow your inner ear and play these melodies on demand.

The kazoo is a musical instrument that adds a "buzzing" timbral quality to a player's voice when the player vocalizes into it. It is a type of mirliton, which is a membranophone, one of a class of instruments which modifies its player's voice by way of a vibrating membrane.