With keyboard I can record a part and then play it back and add pitch bend and mod during the playback. I do it this way sometimes cuz I'm not that good at keyboard and playing notes and using the pitch bend at the same time is too much to process when I'm nervous from recording
Is there a way to do that with guitar? Like just record the melody and then add wah afterward with an expression pedal or something?
You could track DI, reamp with a wah in the chain and put the wah in.
In principle you could put a bandpass on an amped track and automate the centre frequency around. Not sure if it would lead to exactly the same effect though.