I rarely do midi... its 99.9% audio for me, and I do it all myself, which means overdubbing.
There is a lot lost, in performance doing it all yourself.
Smart Tempo is going to change something in that for me.
I just took a song that was tracked at a steady 108bpm.
I had already laid down drums bass, guitar dobro picking part and vocal.
I kept a 4 click intro, muted all the tracks in the project , and then played a rhythm guitar part , whilst singing the tune, at a faster tempo... which resulted in around 114bpm which varied naturally with my intensity.
I Turned on flex for all the tracks, and using SMART TEMPO got it to follow my free played acoustic and vocal and it adjusted everything else to it, no pitch change, no warbling.
Flawless. Couldnt detect anything bad happening to the audio I had previously recorded at a static 108 BPM.
So I wiped the tempo map, and hand drew one in, 114 BPM for the into Verses at 112 chorus at 115, then a ritard over the last two bars going down to 90... worked flawlessly.
This means, you can do your tracking to the grid, as I have always done... but, if you find you need it a bit faster or slower, no penalty, and takes seconds to do.... you can also do what
popmann did and get the whole song to conform to a free played track (like I did in the first example) ...
This is a brilliant feature
Cheers
Wiz