Under which title was the German national anthem formerly known, and who composed the music?

Answer 1

"Das Lied der Deutschen"
composer: Joseph Haydn

or do you mean it was known under the line in the first verse (not used since 1945) that says "Deutschland über alles'?

Answer 2

It was formerly known by its first line as "Deutschland über alles" and is sung to part of the String Quartet in C major (also called The Kaiser-Quartet) by Joseph Haydn.

I should point out that, at the time the words, a poem by August Heinrich Hoffmann von Fallersleben, were written, the "über alles" (over everything) part did not refer to Germany's dominating other countries; the idea of a German nation was a new one, and it was a call to Germans to put their allegiance in Germany, not their native area such as Bavaria or Prussia. That verse is, however not sung any more.

Answer 3

The "Lied der Deutschen" (song of the Germans) was written by August Heinrich Hoffmann von Fallersleben on the Island Helgoland on 26 August 1841. After the reunification the German anthem only consists of one verse:
Einigkeit und Recht und Freiheit
für das deutsche Vaterland!
Danach lasst uns alle streben
brüderlich mit Herz und Hand!
Einigkeit und Recht und Freiheit
sind des Glückes Unterpfand;
|:Blüh im Glanze dieses Glückes,
blühe, deutsches Vaterland!:|

Answer 4

"German, German overalls"

That a was a British deliberate mistranslation during the was.

(Don't mention the war !)