How do you count the rests in a bar (piano...)?

if you mean two eigth notes instead of one quarter note, it's probably because for parts of the piece close to that bar, it's easier to count in half beats so if you count 2 half beats for rest it will be easier than counting one quarter beat

i'm a pianist and have a trouble-free quantity of adventure enjoying piano in super ensembles. a million) verify which places you will would desire to verify the conductor prepare those factors so which you will play in general by ability of expertise (with out observing your palms) 2) comprehend how your area interacts with different factors of the orchestra. Writing in cues and different instrumental factors on your score enables 3) Get to comprehend the piece by ability of ear so which you do not ought to lookup so frequently. hear intently, and fit in the place you're able to desire to. that's enormous prepare for enjoying a concerto! (additionally, learn your area as in case you have been the soloist)