Jem Aswad Senior Music EditorAlthough singer-songwriter Jhene Aiko has been around for a minute and was even nominated for three Grammy Awards in 2015, the three nods her critically feted “Chilombo” album received for the upcoming 2021 awards was one of the more pleasant surprises in a year filled with them.Well, anyone looking to get a sense of the Aiko vibe need look no further than the 15-minute medley she posted on Instagram on Sunday, kicking off the new year with a vibe-filled performance