Though it may be a little off key, there’s something special about the rendition of “Semper Paratus” below. [youtube]http://www.youtube.com/watch?v=oQ6w39N-t4E[/youtube] The piano in the video was used by Capt. Francis Van Boskerck to compose the service’s official song in 1927. Coast Guardsmen from high endurance cutter Munro recently visited the piano in Unalaska, Alaska, wearing dress blues to honor the place where their service’s song was born, a Coast Guard blog post said. Van Boskerck wrote the lyrics to “Semper Paratus” in 1922, but didn’t write a melody to accompany the song. Five years later, he became friends with the only…