Hi @twong757! Thanks for posting to community.
While controlling the Pandora app and using Google voice commands at the same time is not a feature, there is a feature request for this experience. If this is something you'd like to see for Pandora, feel free to vote by clicking here.
In the meantime, you can thumb up or down songs or change stations using Google voice commands. Here are some examples of voice commands you can use with Google:
Request a station: "OK Google, play ____ station on Pandora."
Create a station: "Hey Google, create a ____ station on Pandora."
Personalize your listening with your Thumbs: "OK Google, Thumb up/down this song."
Hear your greatest hits: "OK Google, play my Thumbprint Radio on Pandora."
Skip a song: "Hey Google, skip" or "OK Google, next song."
Play an album, playlist or specific track (if you have Premium): "Hey Google, play "Truth Hurts."
Pause: "Hey Google, pause the music."
Resume play: "OK Google, continue playing."
Adjust volume: "OK Google, turn it up/down."
Set the tone with a genre, mood or activity: "OK Google, play Music for Cooking on Pandora" or "OK Google, play a Hip Hop station on Pandora."
Stop playing Pandora: "Hey Google, stop the music."
Keep in mind that if you have Pandora set as your default music provider, you won't need to say "On Pandora".
You can find more information on voice commands on Google's Help Page.
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