Band of stars showing class in Sinatra number (5,3)
I believe the answer is:
milky way
'band of stars' is the definition.
(I've seen this before)
'class in sinatra number' is the wordplay.
'class' becomes 'ilk' (I've seen this before).
'in' is an insertion indicator.
'sinatra number' becomes 'myway' (I am not sure about this - if you are sure you should give a lot more credence to this answer).
'ilk' placed inside 'myway' is 'MILKY WAY'.
'showing' is the link.
Can you help me to learn more?
(Other definitions for milky way that I've seen before include "Starry band of light across the night sky" , "Galaxy, broad faintly luminous band of stars" , "Millions of stars in a band of light across the night sky" , "Lots of stars" , "Galaxy containing our solar system" .)