Dance. Dance with you in this dance of loneliness

The music I listen to is filled with songs in which the singer shares his or her emotions of love. Listen to Ana Carolina 'Mais que isso', Luiza Possi 'Coração de papel', Chiara Civello 'Un passo dopo l'atro' or Maria Mena 'Just hold me'. 4 songs that touch my heart. Make me sentimental. Make me fragile. Thinking and dreaming of the ones that I once loved so deeply and the ones I love right now. Dreams of meu princesa distante. Everything passes. This includes falling in love with another human being. What is left if falling in love fades or faded away?

What I don't understand is how the singer feels if she sings for the 467th time 'Mais que isso'. Since 4 years I'm listening to the music of Ana Carolina. Listening and feeling the emotions of Ana Carolina. Wondering if the lover she talks about is still there? Was it a him or a her? Did they ever become a couple? Are they still a couple? Does Ana Carolina still dream of him/ her?

I'm wondering if the singer still thinks of the one she thought of when she originally wrote the song? Is it healing if you sing a song for the 467th time? Or just the opposite? My heart would break if I have to but how does a "professional" singer deal with that? Life is more than music on a CD or a song sang but what happens to Ana Carolina, Luiza, Chiara and Maria when those 2 worlds meet. Two worlds? When the "professional" singer sings on stage (world 1) her own most intimate song (world 2). First few times bit nervous I presume. What does she feel when it's the 467th time? What does she feel when the lover she sings about is passed long ago and replaced 5 times by another newer lover? What's my point?

Question: What does a professional singer feel singing a very private and intimate self written song of a love that passed - a song that's so successful and that has to be sang everytime on stage. Indifferent? Professional? Filled with gratitude? Embarrassed? Filled with love? A mixture? Or ...