The term 'FIRST NAME IN FOLK' refers to the first names of famous folk singers. The solutions to this crossword are ARLO (4 letters), Joni (4 letters), and AR (2 letters). ARLO is the first name of ARLO Guthrie, an American folk singer-songwriter who is best known for his song 'ALICE's Restaurant Massacree'. Joni is the first name of Joni Mitchell, a Canadian singer-songwriter who is widely regarded as one of the greatest songwriters of all time. AR is the first name of ARLO's father, Woody Guthrie, an American singer-songwriter and folk musician who wrote hundreds of songs, including 'This Land Is Your Land'.