You can input this audio file into the Audio Chord Wizard of BIAB to make a tempo map of the ritard at the end. BIAB can only alter the tempo at each bar, but in your file that may be enough.

The Audio Chord Wizard will also guess the chords, but if you already know them, then you are ahead and can quickly alter the ones that need it.


BIAB 2024 Win Audiophile. Software: Studio One 6.5 Pro, Swam horns, Acoustica-7, Notion 6; Win 11 Home. Hardware: Intel i9, 32 Gb; Roland Integra-7, Presonus Studio 192, Presonus Faderport 8, Royer 121, Adam Sub8 & Neumann 120 monitors