The European Parliament has voted to oblige airlines to allow musicians to carry small instruments on board and larger ones in the hold. The proposal has to be approved by the European Council before it acquires force of law, and I cannot see budget airlines like Ryanair allowing it to happen without hidden penalties. Or stop bucket shops like the Iberia subsidiary from forcing the Voce quartet (below) to remove instruments from their cases.
However, it’s another small step in the right direction. The new law would require that ‘air carriers must accept smaller instruments into the passenger cabin and must clearly indicate the terms and conditions for the transport of larger instruments in the cargo hold.’