The mark is a sound. The mark consists of the words "Call Goldberg Eight Hundred Six Hundred Six Oh One Four", sung in a medium tempo in the key of D flat, with certain words being sung in harmony. The main melody line consists of the following musical notes, with each note corresponding to a syllable of the words previously noted (each corresponding syllable being detailed in parenthesis behind its corresponding note): A flat (Call), F (Gold-), D flat (berg), A flat (Eight), F (Hund-), D flat (red), A flat (Six), F (Hund-), D flat (red), F (Six), F (Oh), E flat (One), D flat (Four). The harmony line enters on first instance of the word "Six", consisting of the following musical notes being sung above the corresponding main melody notes and with each note corresponding to a syllable of the words "Six Hundred Six Oh One Four": C (Six), A flat (Hund-), F (red), A flat (Six), A flat (Oh), G flat (One), F (Four).