Not that I agree but Don, Tony Bennett insists that he is singing a kind of "folksong".
That's how he classifies his tunes.

Maybe they may become folk songs in time when those who have re-written "Over
The Rainbow" such as Pete Seeger (much to the chagrin of Yip Harburg), find a variant
song in times to come. This is the folk process as it goes from one voice to another.

In many ways, the current commercial songwriter is antithetical to the process in that
they claim the royalties for their composition unchanged.

The index is the acceptance of a variation of a song by an assortment of people who
constitute a kind of cultural milieu. The retention of this variant exists over a period of
time. In this sense, "This Land" or "We Shall Overcome" follow a folk process and can
be said to be a part of this tradition. Songs from the Civil Rights Movement, Labor songs,
parodies, kid's schoolyard ditties, and other forms undgo changes and find new acceptance in different times.

Frank Hamilton