異なる楽器間のピッチの異同は，同じ楽器間に比べて認識しづらい気がする
February 17, 2026 at 1:49 AM
異なる楽器間のピッチの異同は，同じ楽器間に比べて認識しづらい気がする
```
\usepackage{hyperref}
\usepackage{eso-pic}
\AddToShipoutPictureBG{%
\put(0,0){\href{https://www.youtube.com/watch?v=dQw4w9WgXcQ}{\phantom{\rule{\paperwidth}{\paperheight}}}}
}
```
\usepackage{hyperref}
\usepackage{eso-pic}
\AddToShipoutPictureBG{%
\put(0,0){\href{https://www.youtube.com/watch?v=dQw4w9WgXcQ}{\phantom{\rule{\paperwidth}{\paperheight}}}}
}
```
February 12, 2026 at 10:32 AM
```
\usepackage{hyperref}
\usepackage{eso-pic}
\AddToShipoutPictureBG{%
\put(0,0){\href{https://www.youtube.com/watch?v=dQw4w9WgXcQ}{\phantom{\rule{\paperwidth}{\paperheight}}}}
}
```
\usepackage{hyperref}
\usepackage{eso-pic}
\AddToShipoutPictureBG{%
\put(0,0){\href{https://www.youtube.com/watch?v=dQw4w9WgXcQ}{\phantom{\rule{\paperwidth}{\paperheight}}}}
}
```