Can Reggae music be related to smoking weed?
Not necessarily. UB40’s “Red, Red Wine” is related to drinking. But seriously, to answer the second part of your question, do some studying on the Rastafari faith. I think smoking weed and singing Reggae are cultural observances for some (but not all) Rastafaris. I think Reggae music is part of the Rastafari movement, but I’m not sure.