Dreadful drone interrupts your lamentable song (8)
I believe the answer is:
threnody
'lamentable song' is the definition.
'threnody' can be an answer for 'song' (threnody is a kind of song). I'm unsure of the 'lamentable' bit.
'dreadful drone interrupts your' is the wordplay.
'dreadful' indicates anagramming the letters.
'interrupts' means one lot of letters goes inside another.
'your' becomes 'thy' ('thy' historically meant 'your').
'drone' with letters rearranged gives 'renod'.
'renod' put within 'thy' is 'THRENODY'.
Can you help me to learn more?
(Other definitions for threnody that I've seen before include "A song of lamentation" , "Dirge" , "Do try hen (anag.)" , "A lament" .)