I am revisiting the very first project I ever mixed in Cubase. The tracks were originally recorded in garage band. I imported them as .wav files, including the drums (so the drums are just an audio file, not midi). When I imported I neglected to identify and set the tempo (be gentle; I said this was my first project ever) so it defaulted at 120. The song is more like 135bpm. After importing, I recorded several more files, mixed etc. I got to the end and decided the drums are lame, so I want to use Groove Agent to add midi drums. Of course, they import at 120bpm. I have tried stretching. However, the initial tracks don’t line up with the beat timing, since the grid is based on 120 bpm but the tracks are faster. I have gotten pretty close, but… it is still a mess.
Is there a way to get the tempo of the project established at 135 (short of starting with stems and reimporting/remixing/reautomating the entire project) without Cubase altering the speed of the tracks recorded in Cubase? When I change the project tempo it seems to change the tracks recorded in Cubase, but not the tracks I imported.
Thanks in advance!