I heard someone talking about maxforlive lfo mapped to tempo...
Tried and not working at all!
it was requested and it was forgotten.
If you want to move the bpm gradually then you'll have to edit the tempo in arrangement to slide from 100 to 120.
like mirthan said, you can assign a knob to the tempo and be sure to set minimal value to 100 and max to 120.
maybe with clyphx too, it can be done with a little effort
Should be in Session View, because is in a Live Set, and yes I mapped the tempo to a knob controller (VESTA600) as well, but you have to be careful, because its not so precise and you can easily go from 100 to 200
, and then its difficult to adjust it manually again to 120......
Would be nice an automatic smooth adjustment from different tempos