Step by Step

本曲左手以「頑固低音（Ostinato）」為核心，搭配簡單的臨時記號，幫助學生建立穩定的和聲基礎。整體觸鍵以斷奏（non-legato）為主，帶有些許爵士風格。建議先用較慢速度反覆確認左手型態是否平均、穩定，再逐步加入右手旋律。音樂在音量上由弱漸強，音域也逐步擴展。最後一段速度稍微加快，配合音量的變化，呼應「循序漸進」的標題概念。

The left hand centers on an ostinato pattern, combined with simple accidentals to build harmonic awareness.The articulation is primarily non-legato, with a subtle jazz character. It is helpful to begin at a moderate tempo and confirm that the left-hand pattern remains even and steady before gradually adding the right hand. The dynamics grow from soft to loud as the register expands. The slight acceleration in the final section, paired with dynamic changes, reflects the title's idea of steady progression.