concatenating notes with a music expression

[Sirius Barras]

I have a sequence of notes and a music _expression_. 

How could be done a function concatenating each element of the sequence with the music _expression_?

For instance, if the sequence is {c b a } and the music _expression_ is { f g }  I would like to obtain

c f g    

b f g    

a f g 

Thanks