Clumsily lost Ed Sheeran CD, showing no emotion (4-11)

I believe the answer is:

cold-heartedness

I'm a little stuck... Click here to teach me more about this clue!

'no emotion' is the definition.
The definition suggests a singular noun which matches the answer.

'clumsily lost ed sheeran cd' is the wordplay.
'clumsily' indicates anagramming the letters.
'lost'+'ed'+'sheeran'+'cd'='lostedsheerancd'
'lostedsheerancd' is an anagram of 'COLD-HEARTEDNESS'.

'showing' acts as a link.

Can you help me to learn more?

(Another definition for cold-heartedness that I've seen is " Lack of affection".)

I've seen this clue in The Guardian.

Want a hint initially instead of a full solution? Install my app