Historical clue formulations

• "I've ___ Strings" (Pinocchio song) — 2007-01-07
• Woody Guthrie's "I Ain't ___ Home" — 2003-01-02
• "Ain't ___" ("Hair" tune) — 1999-05-15
• Words before "diamond" and "pearl" in an Irving Berlin song — 1996-04-26