In that moment, I was sure Bach and Mozart were there in my heart.
In that moment, I felt the presence of Bach and Mozart in my heart.
①In that moment, I was sure Bach and Mozart were there in my heart.
「その瞬間、バッハとモーツァルトが私の心の中に居たと確信した。」
in that moment→その瞬間に
I was sure→確かに思った、確信した
Bach and Mozart were there→バッハとモーツァルトが居た
in my heart→私の心の中に
②In that moment, I felt the presence of Bach and Mozart in my heart.
「その瞬間、バッハとモーツァルトの存在を心の中で感じた。」
I felt →感じた
the presence of xxx→○○の存在
少しでもご参考になれば幸いです。
日本 
