.TMP File Extension

A TMP file is a temporary file created automatically by a software program that usually serves as a backup or cache file. It is sometimes created as an invisible file and is often deleted when the program is closed. TMP files may also be called "temp files."

Often a temp file is comprised of raw data which is used as an intermediary step in the process of converting the content from one format to another.

File created by Finale, a music notation program for instruments, vocals, and more; contains backup data for the document you're working on; acts similar to a cache file; exists only while you're working in Finale and deleted when the program is closed; cannot be opened manually.

NOTE: You cannot manually create a TMP file in Finale and you'll most likely never see one.