That, or he just buckled under the weight of his actual full name, which is: Karl Theodor Maria Nikolaus Johann Jacob Philipp Franz Joseph Sylvester Freiherr von und zu Guttenberg. I kid you not.
What music did Guttenberg request for his military send-off? That would be "Smoke on the Water." The band had two days to prepare, and did a pretty impressive job. Check it out.
On the song: here is an analysis with background, and here is the original: