If you have ever imported multiple files into Logic Pro, then you have most likely seen the option to create a smart tempo multi track set before. This tutorial explores what its purpose is, and things to be aware of if using this feature.
If you choose to use this feature, Logic will bounce or render all the files you are importing into a single audio file, and use that file for tempo analysis. This audio file ends up on a track in the project so you may want to mute that tracks as to not have a double of all your tracks playing.
You may have noticed I mentioned audio files. This is because MIDI files usually have tempo info that Logic can import and you would usually be prompted to do so when importing a MIDI file, especially into a blank project.
It is possible for audio files to have tempo information embedded as well, but this is not as common. When Logic detects tempo info whether in a MIDI or audio file it usually asks if you would like to set the project to that tempo or adjust the file to the existing project tempo.
