This is the 2435th most frequent Japanese word.
レッスン
"Lesson"
Here, 'レッスン' refers to a session of learning or practicing something (in this case, piano).
今日はピアノのレッスンがあります。
I have a piano lesson today.
In this sentence, 'レッスン' indicates structured teaching or tutoring, specifically in the Japanese language.
オンラインで日本語のレッスンを受けています。
I take Japanese lessons online.
Here, 'レッスン' denotes a class or session designed for introductory learning or activity in yoga.