Legendary German rock singer? (7)
I believe the answer is:
lorelei
'legendary german rock singer?' is the definition.
(I've seen this before)
'rock singer?' is the wordplay.
I cannot really see how this works, but
'rock' could be 'ore' (ores are found in rocks) and 'ore' is present in the answer.
This explanation may well be incorrect...
Can you help me to learn more?
(Other definitions for lorelei that I've seen before include "Siren who lured sailors to shipwreck" , "Dangerous female" , "Siren of German legend who lured boatmen in the Rhine to destruction" , "Great Rock on the Rhine where sirens lived in legend" , "A Rhine maiden" .)