and Judy's response was just after Lin posted on the Origins: The Song of Wandering Aengus

I didn't realise when I chose to sing Bread and Roses on Mudcat 1 May singaround, in honour of May Day as a workers' holiday, that I was singing on the birthday of Judy Collins and the day after the birthday of the late Mimi Baez Farina. James Oppenheim composed the lyrics as a poem in 1911, inspired by the words of labour activist Rose Schneiderman. I don't know if Judy and/or Mimi were at all familiar with the tune Caroline Kohlsatt had composed for the poem; at any rate, Judy Collins asked Mimi Farina to compose an air for the tune. Collins recorded the song with that tune, which appears to be the best known setting of the tune today. (I don't know that any of the many settings of Yeat's Wandering Aengus poem has emerged as a clear public favourite!)