Set a temporary tempo change

[Paolo Prete]

Hello,

is it possible to revert a tempo change to the previous tempo setting, without explicitly writing this previous one? 

Something like (pseudo-code):

\tempo 4 = 120  { ...some music .... } \temporaryTempo 4 = 160 { ... some other music .... } \unset \temporaryTempo

This would be useful for the midi output...

Thanks