Possible Clues:

• Tanzanian island
• Part of Tanzania
• Island north of Dar es Salaam
• One accompanying a touring rock band
• Island in East Africa
• Island off Africa, part of Tanzania
• Indian Ocean island now part of Tanzania
• It's said to be mad to exclude Zulu leader in the island
• Island in the Indian Ocean off the coast of East Africa
• Island's unknown character I found in a Kiwi watering-hole