To pick the right song

My sister who is a teacher occasionally sings at weddings and funerals.
Very sadly one of her older colleagues at school recently died.
My sister volunteered to sing at the memorial time arranged by the school, so she went home to practice the song she wished to sing. It was not going to be a religious song because the man had not been religious. When my sister had been practicing the song for two days, she spent just a minute digging into her large pile of sheets of music collected during many years. She happened to find "Bridge over troubled water" and felt very strongly that this was the right song to sing. She had never sung it before.

After she had sung at the school, the widow approached her and explained that "Bridge over troubled water" had been her husbands favorite song. My sister who had shared the same study room as the man for some time, had no idea...

She tells me that sometimes when making a choice it's better not to think too much.