catching the flow

I heard that this woman who is an acquaintance of mine is a musician--when she looks at notes on paper, she can hear the music in her head. She said that sometimes just looking at sheet music makes her cry; I assume she can hear the music in her heart. I was thinking about that and was trying to imagine what it must be like to play in an orchestra, totally feeling the music, not thinking about it at all, just completely feeling it together with all the other people playing.
I am such a solitary person. I want to know what its like to share beyond mind with a group. My closest experience was being at grateful dead shows as a young woman, dancing within the crowd, feeling the music move my body around the others who were sharing the experience with me.
I ran yesterday for longer than I ever have. I felt like my breath was slipping and I disengaged from my mind and let the thoughts go and broke through the fear of not having enough breath...and ran (actually jogged). It was good. I thought about what it would be like to run in a group, or to run in a marathon and be surrounded by others running, experiencing their version of the same.

Sometimes yoga is like that for me. One of the things I like the best about my class is that there are always at least 15-20 people who show up. We are a group, we flow through the movements together. I definitely feel the combined energy and I draw on it to push me through when my mind says its too hard. I draw on the power to disengage my mind and just let my body flow.

I want to know how to catch the flow in general in life...