[AkaInuHime]

Strangely, the default keybind for the sing bubble emote (ctrl+g) doesn't work in WASD mode, despite other bubble emote keybinds like ctrl+a, ctrl+s and so on still working.

As well, using shift + the arrow keys in WASD mode will have you move, rather than change what direction you're facing.

[Neus]

Sing has been added to WASD mode.

Shift + W/A/S/D works for changing your direction. The game generally assumes you don't want to use arrow keys because you're in WASD mode.