'softly-produced' originates from the combination of 'softly' and 'produced', where 'softly' is derived from Old English 'sōfte', meaning 'gently', and 'produced' is from Latin 'producere', meaning 'to bring forth'.

'softly' changed from Old English 'sōfte' to Middle English 'softe', and eventually became the modern English word 'softly'. 'Produced' evolved from Latin 'producere' to Middle English 'producen', and eventually became the modern English word 'produced'.

Initially, 'softly' meant 'gently or quietly', and 'produced' meant 'brought forth'. The combination retains the essence of these meanings, referring to something created in a gentle manner.