Horizon of Darkness

Tactile sensations gradually faded, his hand turned pale, resembling an ashen spider nestled on a pipe, and his nails took on an unpleasant bluish hue and began to crack, after which they fell off one by one, scattering into dust in the air. Radiel snapped his fingers, stirred, and with a crunch, stretched what remained of his neck. He tapped it back and forth with a bony sound. Finally, with a familiar movement, he pulled out his lute and placed his fingers on the strings. In the thickening darkness of the alley, sparks flew, and reflections from a bright flash danced on the windows of the darkened buildings. A trial chord on the necroguitar made them shudder in their frames. The nightmare begins.

It's not needed here.
Is Radiel just walking around the city at night?

Radiel returns to the tavern as a Child of Nightmare.

He throws the door open with a kick and freezes for a moment in the doorway in a dramatic pose, guitar at the ready. A bony hand rises and descends on the strings, producing a short introduction on otherworldly frequencies, instantly drowning out all other sounds. The next moment, the skeleton bursts inside and in two leaps finds himself in the center of the room, jumps onto a free table, and launches into a fiery solo on the necroguitar, tapping the rhythm with his heels, causing dishes to rattle and mugs to jump around.