I know this is not a simple question but I would really appreciate it if someone could simplify the answer for me.
We are a rock band comprising drums, guitar x 2 and bass. We had a keyboard player and have been used to having the flexibility of this. Basically we want a synth part of the band that can be triggered by the guitarist, played live at times but sequenced at other times. Obviously we are aware that we need some sort of tempo clock and headphones for the drummer etc but I have absolutely no idea what equipment we would need, we wish to use arpeggio synth sounds, strings, samples etc etc. Please help.