Transformer music
Like many cultures, Transformers make music to express themselves. (The Decepticon Squawkbox, for instance, is a passionate musician.) However, very few of these alien songs have ever been recorded or played for human ears.
Generation 1 animated continuity
Starscream has the Constructicons play a fanfare on brass instruments for his coronation. After a while, he gets sick of it and shoots the trumpets. The Transformers: The Movie
Headmasters cartoon
Hardhead enjoys karaoke after just a few drinks of energon. The Shadow Emperor, Scorponok
Devil's Due G.I. Joe vs. the Transformers continuity
At least in this continuity, Cybertron had a rich history of music. With his Matrix-granted powers, the former G.I. Joe commander Hawk had access to a database of at least 11 million traditional Cybertronian songs. One apparently has a line that goes: "Protoform/Protoform/What will you be?"
Transformers Armada
The Mini-Cons were revealed to project a strange, haunting melody amongst themselves. The exact effect of this varied.
Transformers Cybertron
The Transformers on the Speed Planet have a band that plays at official functions.
Transformers Animated
The earth song "The Itsy Bitsy Spider" is known even by Decepticon warriors.
Movie continuity
Grindcore enjoyed listening to Shock Pop, a type of Cybertronian music, while living in Vos.

