虚心坦懐
kyo.shin.tan.kai

Literally: empty – heart/mind – wide/level – pocket/heart

Alternately: Open-minded and open-hearted. Without any bias, hangups, or pent-up bad feelings.

Notes: In this compound of compounds, 虚心 refers to a lack of prejudice or preconception, while 坦懐 is inner peace.

Replacing 坦 with homophone 担 (“carry on the shoulder”) is of course an error.

The name of a band that, it seems, performed at a Nagoya bar called Tight Rope on the date noted, in the fall of 2015.