Aaliyah would have been 38 years old today, and there's no better way to remember the irreplaceable singer on such a day then to dive back into her influential and timeless musical catalog. While there are many interesting pockets of the late R&B star's body of work, we're looking at one of the more obvious, but still very special collaborative relationships. Timbaland worked with Aaliyah throughout her two most celebrated projects, 1996's One In A Million and 2001's Aaliyah, creating (often with the help of Missy Elliott and Static Major) songs that would stand as the defining moments of both artists' careers. Today, we're looking at some of the most classic songs in their repertoire -- which while not giving us the entire spectrum of their collaborative work, are undeniably some of their most beloved tracks. Click through the galleries to revisit five innovative songs that continue to influence R&B and pop to this day.