meaning of before "~time ~before the workers passed by, before snow encased the mt~"
" From outside wafted one of the chanting songs the workers sang as they walked to the quarry. I hear a work song say winter is long. 'The sound came closer, and with it an insistence that it was time join in, hurry, hurry, before the workers passed by, before snow encased the mountain inside winter.'"
1.Does 'before' in 'before the workers passed by' and 'before snow encased the mountain' indicate 'time before', otherwise 'in front of'?
2.What does 'chanting songs' mean?