The Evesham Psalter - folios 7v & 8r
These are LARGE images I put together, so make sure you click through to get the full size version to see all the finer details.
A full page decorated initial B (Beatus, or Blessed in English) on folio 7v, musicians can be seen playing various instruments, including Bells, Harps and the Vielle - a medieval instrument similar to a violin.
Folio 8r. has the first verse of Psalm 1 in Gold. I love the stars against the blue background - it could almost pass a bit of modern art!
Add MS 44874; Origin England, made around 1250AD
Images from the British Library manuscript website.