There are some timbral impulses in the Blüthner Digital Model One that are based on vocal resonances which include vowels, semi vowels and consonances. Here is a short and definitely not your average piano demo illustrating a couple vocal TI's.
The piano "vocal example" http://www.proaudiovault.com/BDMO_ee_to_but.mp3 is a piano sequence with the first 7 vocal timbral impulses that change every 6 beats (3/4 time). The vowels heard in order are the "ee" sound in sea, the "i" sound in bit, the "e" sound in bet, the "a" sound in bat, the "ah" sound in hot the "r" sound in bird and the "u" sound in but. You cannot automate the impulses changes at this point however you can still do it in a DAW by rendering the same midi file but with a different vocal impulse. Once you have the 7 vocal piano performances you inport them into a DAW then use automation to highlight each vocal resonance track in this performance.