Yes and no. I wouldn't call it an accent. Some people do. But listen to one of Common's cds from beginning to end, then you might notice something. Also, Don Juan sounds like a straight up Westsider though. Oooh Da Brat and Twista sound like Westsiders to. Its just something you have to become familiar with. I would just say its a different sound thats not that distinct compared to other regions of the country. But I never thought Northerners had accents. I just thought we pronounced each syllable in every word.