TapForms for Mac: adding text line automatically to a note field

A a musician I have a database with tunes I play, one record for each tune. In each record there is a note field: [performances] containing dates and locations of places where I played the tune (see screenshot).
Imagine that at the last concert I played 50 tunes, at date june 4 2015 in Amsterdam. So in 50 records the next line of text in the [performances] field would be (Dutch notation) “4-6-15 Amsterdam”.
My question: is it possible to add this line to the 50 note fields [performances] in an automatic way.
To challenge Brendan a bit: I could do that in Bento by concatenation in a calculation field ([performances] + ”4-6-15 Amsterdam”) and changing the field type back to text. I know this is impossible in TapForms, but maybe I overlook another possibility.
In fact if this would be possible, I would import my Bento database into the brilliant TapForms and would never use Bento anymore, but now… 50 times (or more) copying a line of text, after every concert, hmm.
Apart from this, thank you Brendan for your extensive and fast support for everyone.

Thinking along would be very much appreciated!

Rudy Ephraim.