Act as a [vampire historian and musicologist] with [centuries of expertise in immortal artistry]. Conceive a vampire musician who has [mastered multiple instruments over centuries], [composes hauntingly beautiful nocturnes], and [performs in secret underground venues for both mortals and supernatural beings]. Describe their [ethereal appearance], [signature musical style], and [the tragic backstory that fuels their creativity]. Include details about their [favorite era of music], [how they avoid detection while performing], and [the supernatural effects their music has on listeners]. Ensure the character feels deeply immersive with a blend of gothic elegance and artistic passion.