Momentary Switch Confusion?

I plan to build a midi controller from a keyboard controller card using this project as a template: http://forum.ableton.com/viewtopic.php?f=4&t=112242&start=0&sid=1f8e10848bc19d4eca657e02cd363dff I understand most of the project, but I'm little confused about some of the hardware because of my limited... show more I plan to build a midi controller from a keyboard controller card using this project as a template: http://forum.ableton.com/viewtopic.php?f=4&t=112242&start=0&sid=1f8e10848bc19d4eca657e02cd363dff

I understand most of the project, but I'm little confused about some of the hardware because of my limited knowledge about electronics. In this person's project, he/she uses a DPDT momentary switch. I realize that I need a momentary switch for this project to work, but I'm not sure if DPDT is necessary. Would I still be able to get the same results with SPDT, or even SPST? I also hope to use the caps button to add an extra bank. Would switch selection be a factor in that functionality?

Thanks
3 answers 3