Thanks to Pablo Lafuente for pointing out this mortgage deal that could be suitable for musicians if you have a guarantor and/or have saved up 10% of property price..
Barclays
https://www.barclays.co.uk/mortgages/family-springboard-mortgage/
Buy a home without a borrower deposit if your family or loved ones can provide 10% of the property’s price as security.
How it works
You need to be 18 or older and buying a home in the UK worth up to £500,000. Our Family Springboard Mortgage isn’t suitable if you’re buying a new-build property.
You don’t need a borrower deposit
Your family or helper provides security to your mortgage by opening a Helpful Start account with 10% of the property purchase price.
Your family gets their money back with interest
If you make all your mortgage payments on time, we return their money – with interest – after 3 years.
You keep full rights to the property
Your family or loved one isn’t considered a guarantor – but we may retain some of their money for longer than 3 years if you miss any payments.
https://www.barclays.co.uk/mortgages/family-springboard-mortgage/