O Tempo Não Desfaz was introduced in 1960 by Geny Martins as A-side to É o Fim. The song was one of the last compositions by Newton Ferreira de Mendonça who died in late 1960 at the age of 33 after suffering his second heart attack. Mendonça is best known for the songs he composed together with Antônio Carlos Jobim such as Desafinado, Meditação, Discussão, Foi a Noite and Samba de Uma Nota Só.
O Tempo Não Desfaz was recorded only three more times at its time, first by Ernani Filho on a tribute album that also featured Carminha Mascarenhas and Marisa Gata Mansa on vocals in front of a top-class orchestra conducted by José Pacheco Lins aka Pachequinho and featuring Irany Pinto, José Luiz aka Formiga, Ed Maciel, Zé Bodega, Aurino Ferreira de Oliveira.
The next year, O Tempo Não Desfaz was included on A Voz Balanco… Samba 35 mm, the fabulous solo debut by singer Sandra, who died in a car crash a few days after she received an award for this very album. Marco Ruppi, who arranged Sandra’s album along with Celso Murilo, besides both also playing saxophone and organ, reutilized all arrangements from Sandra’s album the following year on Sambalanço credited to Orquestra Moderna de Sambas.
Selected recordings of O Tempo Não Desfaz:
1. Geny Martins from the single O Tempo Não Desfaz b/w É o Fim (1961, Sinter 650-a)
2. Ernani Filho from the album Em Cada Estrela uma Canção (1961, Copacabana CLP 11191)
Art work for Em Cada Estrela uma Canção by Sérgio Malta
3. Sandra from the album A Voz Balanço… Samba 35mm (1962, Pawal P-20.016)
4. Orquestra Moderna de Sambas from the album Sambalanço (1963, Pawal P-20.023)
Brazilliance 
Great tune! Sandra’s version really swings. Thanks AD.