If a vcv were to be recorded on continuous loop of a guidebgm, a highly time-efficient method, it's easy to calculate the time it takes to record. To make things easy, I'll assume 120bpm and that there's a measure at the start and end for a brief break between strings. So, for 12 mora, that makes a bgm 20 beats long, or 10 seconds. Multiplied by 160 strings, that's 1600 seconds, or 26 minutes and 40 seconds. A theoretical time, which in practice may work out to be approximately double (to account for setup time, water breaks, and rerecording samples for better quality). Interestingly, this is longer than the theoretical minimum time for an arpasing voicebank, which is 7 minutes and 30 seconds.