Alphabet Associations - III

[LMcD]

... if LMcD will accept my apologies for my egregious pedantry -



- shall I go ahead and set my little E?



.

Why not?

[vinteuil]

Why not?

... thank you!

What E connects -

a) a French work underpinned by Berlioz and Mendelssohn
b) a French work containing a polka
c) a polka written in the US almost contemporaneous with (b)

.