A member of my "primary minyan" posted this link to a Moroccan tune for "Ein K'eiloheinu": bit.ly/13sYINd He plans to use it this Shabbat without the Ladino parts, so he emailed the link so that people could listen and get familiar with it in advance. I'm disappointed that I will miss it, but we are definitely going to our other "tiny minyan" this Shabbat because I am reading Torah there. I think it is a nice tune, so I wanted to share it with others.
No instruments for sure, but perhaps the prayer leader tapped out the beat on the lectern or other members kept the beat by clapping. Most members of my minyan observe Shabbat in an "orthodox" sense, so we do not use amplification or musical instruments at Shabbat services. However, one concession is that when a number of elderly members of our former "host shul" joined the minyan, we started to use a closed-circuit system with a pick-up microphone that sends a signal to battery powered headsets that can be worn by members who are hard-of-hearing.