composed by Terry Winch http://www.terencewinch.com/music.html
Terry plays the D/C# accordion in a unique East Coast Irish-American style. This tune is on the album Hard New York Days by his band Celtic Thunder (no relation to the PBS schlockmeisters.) http://friendsofsliabhluachra.tumblr.com/post/87995252367/three-zany-irish-american-polkas-from-the-mind-of
This one is played by any number of musicians in the Washington, DC area and always lifts the mood when it crops up at a session. Possibly influenced by The Merry-Go-Round Broke Down, most famously heard here: https://www.youtube.com/watch?v=Iv6C8q_8hJU
Yeah, good tunes, we play them up here in Frederick.