Possible Clues:

• ___-pah-pah
• "___-Pah-Pah" ("Oliver!" tune)
• Part of a tuba sound
• Tuba syllable
• Word from South Africa for an uncle
• First note of a tuba solo?
• '___-Pah-Pah' ('Oliver!' song)
• First tuba note?
• "Papa-__-Mow-Mow": 1962 novelty hit
• South Africa's ___ Paul Kruger