What is the name of the CD on which Willie Nelson sings covers of 50s and 60s songs?

My father who is the most impossible person to buy presents for mentioned an old tape that he had that he would love to find again. The problem is I do not know the name of it. All he said was it was a tape by Willie Nelson and he was singing covers of old 50s and 60s music. If anyone could tell me what the name of this is, I would be so grateful. Thank you so much!