doppio? Valore is twice as long as it means, that is, twice as slow.

d' ordinario means the same as ordinario. Dos (west one, first, a pair, a pair. Double English), an archaic variation in classical piano music.

Common musical terms:

Slow down rall. rallentand

or Rit. Ritardando

Slow down riten. ritenuto meno mosso

Slightly slow poco meno mosso (the meaning of this "slightly slow" is different from the "slightly slow" in the basic speed, which is slightly slower than the full speed. Slow down a little)

Slow down twice doppia lunghezza di tempo

Broaden or relax allargando

Fade away manc.mancando.