This bit shows a quick Ableton Live trick for building tempo changes directly into Session View. Rename any scene with a BPM value, like typing 120, and hitting that scene instantly shifts the whole set to that tempo, no separate automation needed.
You can also keep a descriptive scene name and add tempo control at once, just separate them with a colon, like Chorus:140. That way each scene stays readable while still carrying its own BPM.
Once you've set unique tempos across scenes, triggering them live lets you jump between tempos on the fly, useful for tracks with dramatic section changes. If those scenes get recorded into Arrangement View, the tempo jumps translate automatically into tempo automation there, so the groundwork is already laid if you want to move from live performance into a fixed arrangement.