Complex sentence: The Zimmers are a British band, thought to have the oldest members in the world: the lead singer, Alf, is 90, and the oldest member, Buster, is 102.
Split into simpler sentences: The Zimmers are a British band, thought to have the oldest members of any band in the world. The youngest member is 71, the lead singer, Alf, is 90, and the oldest member, Buster, is 102.