Its kind of an ongoing debate, there simply is NO "scots" Accent or way of speaking the accent and use of words varies across the country, Burns is representitive of of lowland Scots folk used language in his day, most people associate Glasgow as being THE Scottish accent as its the most used on TV etc. If you read the otherwise excelent series of "outlander" novels the leading man "jamie Mckenzie"i s a kind of " Aye ma bonnie wee Lassie Dinne worry" "Dinne" "Wouldnae" "Canne" are words normally associated with lowland acents, rather than Inverness where Jamie is purported to be from. Imagine an episode of "Dallas" with the cast having California accents. etc. If you explore the differences in Scottish accents they can be startling, sing song accents in some parts of the Highlands, to as near as Dammit posh English in other parts of the Highlands, with Rab C Nesbitt as you get further south, Billy Connolly has slowed down and lengthened the vowels in his Glasgow accent (presumably for overseas popularity) as has Craig fergusson. there was a guy on youtube who did some excelent "snippets" of regional accents, the late great Peter Sellers could imitate virtually every accent across the uK including specific parts of Scotland.