One word that fits this definition is aria.
That word could be aria.
solo
It is called an aria.
Free, sole, or solo.
Aria
Stevie Nicks
Lone and solo, Stag, Only, Self, Gone, Left.
A diva's solo is often referred to as a "showstopper" or simply a "solo performance." This term highlights the performance's ability to captivate the audience and showcase the singer's vocal prowess and emotional range. In musical theater, such solos can also be labeled as "11 o'clock numbers," a specific type of impactful song performed late in a show to leave a lasting impression.
"Someones Changed"
Violin
Guitar, voice for the solo at the beginning.
love is just a four letter word which has no meaning to me anymore = amor es solo una palabra de cuatro letras que lla no tiene sentido para mi