forced line break in header?

[Stan Sanderson]

I would like to control where the line breaks in a header entry. 
Specifically, as below:

composer = "Adapted from a familiar melody by John Doe"

so the output would be (right justified)

Adapted from a familiar melody
                                by John Doe

Can a carriage return/line feed be embedded?

A related question is how umlauts, e.g.,  are placed within header text.

I would be grateful for any suggestions.

Stan