Midge Ure has had to cancel his upcoming tour due to a health issue needing "urgent" treatment.
The Ultravox singer will perform in August but take time off from September, with shows dropped in Australia and across Europe.
Ure, 71, wrote on social media: "During a recent routine check-up, doctors discovered a health issue that requires urgent treatment and a period of recovery."
The Scottish star, from Cambuslang near Glasgow, organised Live Aid alongside Sir Bob Geldof and had 1980s chart hits with Ultravox and Visage.
