Your basic research is going the right direction...The two clips, and what you described are three separate things...Your requirement is for 'columns' of light - lasers or lenses to form beams.Clip 1 - various LEDs around the kit that flash in sync with each hit.Clip 2 - LEDs 'inside' each drum, to illuminate the (clear) skin and water pool.Each has different problems for implementation. but your use of piezo sensors is a good starting point.As noted, you need LED drivers (depends on type and distribution of LEDs)Getting the micro to do its thing is relatively straightforward.You would simply fun a tight loop (no delays!), and treat the piezos as switches.(Don't connect the piezo directly to an input pin they can generate high voltages = toast your arduino!)You may like to add selectable profiles for brightness and decay - so the light show doesn't become boring and repetitive.There a few other tricks you can add, but get a sensor and one LED working to prove your fundamentals - then carry on!