I do sing the a,b,c song using the phonetic alphabet. I hope this helps. I support the excellent information already shared and would like to add how adaptable young children are. Culture is a large part of Montessori education and that comes in many forms. Little songs that we sing to our children lovingly and innocently are part of our heritage.
Children learn language effortlessly and quickly.
That is why it is best to teach a second language when a child is very small. I hope this helps.