两声钢琴提示

Do not merge into one single note. Generate two clearly separated piano notes. 1-second UI sound effect. Two separate upright piano notes. First note: soft mid-high "ding". Second note: slightly higher, gentle "ding". Very short silence between the two notes. Curious questioning feeling. Fast decay. Small room reverb 0.2s. No chords. No melody. Only two piano hits.