The first step: into the game built-in Doodle voice channel.
After entering the channel, you can see a "small microphone" icon in the upper left corner of the channel, this is the karaoke switch button, please click. (as pictured)
Step two: Switch the karaoke mode.
When you click on the "Small microphone" icon, you will see both the karaoke mode and the voice session mode options. (as pictured)
At this point the hook points in the "karaoke mode" on the channel can be opened karaoke.
After the karaoke is successfully opened, the "small microphone" icon in the upper-left corner of the channel becomes the "Small note" icon. (as pictured)
Question: In-game doodle How to play songs on wheat?
In the open karaoke mode of the channel, the first point "grab the wheat", after the wheat, and then to the point of the channel below the "Karaoke" box to start playing songs. (as pictured)