IMSLP (Petrucci Music Library) hosts several versions of Libertango , including:

Some works published before 1930 may appear on these regional servers, but since Libertango was composed in 1974 , it does not yet meet the criteria for U.S. public domain status.

Libertango is written in with an introduction and coda. Below is a formal overview:

For those interested in performing "Libertango," sheet music can be found on various music repositories, including the International Music Score Library Project (IMSLP). The IMSLP is a great resource for accessing a wide range of classical and contemporary music scores.