Video by Synchro Arts via YouTube
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When using different string libraries, it can sometimes be tricky to get them all synced up. The most common solution is adjusting the sample time, but it can take some time to get everything lined up depending on the tempo of your track, and the phrasing of the string instruments.
Using Vocalign Ultra is the quickest way to get tight sounding spiccato strings.
Try Vocalign Ultra for free: https://www.synchroarts.com/products/vocalign-ultra/overview