Hello
It is possible to use websites to analyze the audio of an Mp3 and visualize the chords contained in it. But afterwards, for Chordify, as for Songle, it is not possible to print a grid. It is difficult to listen to anything other than the initial tempo, but it is already good to be able to give a first information which is then visible by all.
It is possible to do exactly the same analysis of the chords contained in an audio file with the SONIC VISUALISER software and the CHORDINO plug-in.advantage, it is then possible to listen to the audio by portion or to slow down the listening.it is possible to print the order of the names of the chords found but not in a grid. The result is given in text format.