I can try and spell it out, it’s not that different to the english version, just pronounced a bit differently:

(the „eh“ is pronounced somewhat like the „ea“ in bear or pear)

Ah, Beh, Ceh, Deh, Eh, Eff, Geh, Hah, I (pronounced like the english E), Jott, Kah, Ell, Em, Enn, Oh, Peh, Koo (Q), Err, Ess, Teh, Uhh, Vao, Weh, Iks (X), Üpsilon (Y), Tsett (Z)

and then we have the Umlaute Ä, Ü, Ö, which are not included in our standard ABC-Song. And there’s „ß“ as a sharp „S“, which is not used as commonly anymore but still is standard for some words