Stephen Foster (1826-1864) is known as "The Father of American Music". He wrote many beautiful songs that have maintained their popularity even to today.
I discovered the perfect way to become calm and mellow---just listen to two wonderful performers sing his songs.
Marilyn Horne (b 1934) is an American opera singer. Here, she sings "Beautiful Dreamer". Lean back, turn down the lights, close your eyes and be swept away in peace.
http://www.youtube.com/watch?v=-drAf-BQaRc
Deanna Durbin (b 1921) is an American singer/actress. Here, she performs "Old Folks at Home" from an old motion picture.
http://www.youtube.com/watch?v=hju5YFPH_eA