Sight-reading practice requires an endless supply of fresh pieces – because of course, it’s no longer sight-reading after the first play-through.
The ABRSM books of graded sight-reading tests† are useful (and they also include graded transposition tests) but you work your way through them extremely quickly.
After that it’s more difficult – at CertRCO level you need a something with a few changes of manual, some chromatic writing, and an intermittent pedal part which isn’t too technical. So wading through a book of Bach chorale preludes isn’t quite the thing. But who wants to spend loads of money on music you will only play once?
In the category of music that you definitely would want to play again, see the Oxford Service Music books for Manuals and Pedals*, Books1 and 2 (Book 3 is more ARCO sight-reading standard).
I recommend secondhand music outlets as a good next port of call. Bountiful cheap and disposable organ music can be found if you keep your eyes open. One of my tutors has suggested the organ works of Eric Thiman for sight-reading practice (preludes, interludes, etc) and I have already found several second-hand volumes on ebay for a few quid. At organ events there’s often a sale of old organ music for some worthy cause – I snapped up a highly suitable Kevin Mayhew Easy Organ Album last Saturday this way.
Anyone tried the UsedOrganMusic website? They specialise in secondhand classical organ music, and I see they have some Eric Thiman in their mammoth catalogue.
Be patient – something will come up sooner or later. See you on ebay and we can fight for it!
†Organ Specimen Sight-Reading Tests, Grades 1-8
Associated Board of the Royal Schools of Music
*Oxford Service Music for Organ series
Books 1, 2 and 3 for Manuals and Pedals
Compiled and edited by Anne Marsden Thomas
Oxford University Press
I’ve just spotted this article so my suggestion may be old hat by now but what about this one for iPad users? Download the free piaScore app and access the massive IMSLP resource – it’s transformed my sight reading (in time spent, rather than results, I hasten to add!!) and I’ve saved a considerable selection to learn properly later – AND there’s the convenience of being able to “turn the page” with a shake of the head (but don’t fiddle with your hair, or look out of the window during a piece or you’ll find yourself on the wrong page…).
Not at all quick and easy to find readable lists of sheetmusic for sale, and to Look Inside.