5.20 Is that Morse code at the beginning and end of "Nothing Changes?"
Yes. The "dah-dit-dah-dit (space) dah-dah-dit-dah" heard at the beginning with a violin and at the end with a single piano key is "CQ" which is the international code to establish contact with another radio operator. In effect, "Is there anyone out there? Please reply."
Graeme Edge reported in Higher & Higher magazine that operators use the mnemonic "seek you" to remember the code, and at the end of "Nothing Changes" the code CQDX (where DX sounds like dah-dit-dit (space) dah-dit-dit-dah) for "seek you long distance" was used.