Clue: Have an inclination to accept German song after extremely nice English one (6,4)
Answer: NELLIE DEAN
Explanation: Definition: English one
**LEAN** ("have an inclination") *to accept* **LIED** ("german song") *after [extremely]* **N**(ic)**E** 
*"Nellie Dean" was a sentimental ballad written in 1905, which became popular in the UK as a pub song, but it was ortiginally American, not English.