Read, Write, Play... I do most of it.
I've written for Orchestra, Marching band, Voice solo, Chorus, Brass Ensemble, Chamber Orchestra... most of it just for kicks
I read all 3 clefs and their variations (Treble, Soprano, Alto, Tenor, both Baritone clefs, Bass, Sub-Bass). But that's not too hard, as most of them are just the other clefs shifted a bit on the staff.
I sing, play Bassoon, Trumpet, Piano, and Percussion, and I can bat out a tune on almost anything. Except the Flute. Flute is hard