I don't think essential does audio to MIDI as standard, maybe its the ARA integration that allows it to do more... but it certainly works.
I ended up upgrading to Melodyne Editor in the end, which gives better results and allows me to do the same level of pitch/time correction that you can with MIDI tracks. It has saved me SO much time with "picking" guitar takes, as tweaking a single out of tune note is a breeze.