I always understood it to be a good practice to start with a clean slate when beginning a new performance, song or pattern so I perform an initialize job to make sure to clear everything first back to default. I know I can pick and choose to initialize all or some parts. I was reading some of your replies to other questions suggesting that there are times to do a second initialize job on a new pattern or performance. Let's take the example of creating a new 2 part Performance. First, I understood I should initialize checking all parts to initialize all. You then went on to tell me to then perform a second Initialize job, but this time only initialize the parts I plan to use. Why initialize twice? Let's say I only plan 2-parts in my performance. Does the second initialize somehow limit my new performance to two parts, i.e. does it then turn off parts 3-4 ? I couldn't find anything in the manual to address how / why to perform two consecutive initialize jobs. I thought I only needed one initialize job....