How can I change my bass guitar tuning? In this case I want to have a whole step down standard tuning (DGCFAD) (for 4 string bass it should be DGCF). How can I do it?
I don't have Sibelius 8 but in 7 you have to create a new instrument using the Edit Instrument menu. Select 4-string Bass Guitar [tab], select New Instrument, then edit staff type. There you can change the pitches of each individual string. You can do the same to make a transposing notation staff if you want to read in E standard tuning.