As Harry sat on a stool, his fingers gently turning the tuning pegs of his guitar, he began to hum a soft tune, his voice warming up in tandem with the chords. Yet, despite his experience on the pub's stage, an unexplainable nervousness started to creep over him. His hands, usually steady, began to tremble slightly, causing the strings to emit a faint, wavering sound. He frowned, trying to shake off the unsettling feeling.