Someone Who Can Play a Few Chords

When you launch your public meetings, music is one of the things that you need to consider. 

People (rightly) would expect there to be sung worship in a church gathering, so you need a way to facilitate this happening. 

The best and most obvious way of doing this is by having a worship leader within the group. How good they need to be depends on the context that you are planting into. In some settings, a passable voice and basic guitar skills serve fine. In other contexts (particularly when you are trying to reach creatives) it can really help connect with people if you could up your game a bit, and you would ideally have a more accomplished leader, perhaps accompanied by other musicians or even a full band. 

Other answers may include ‘borrowing’ worship leaders from a sending church, asking someone to learn (learning from scratch is probably too big an ask, but at Christ Church Manchester we have had a few singers who have learned to play guitar who in a short space of time have become really very good!) or even using a technological solution (such as iSingWorship).

However you do it, figuring out an answer to the music question is a necessary step before you are ready to go public.