集中力upの作業用bgm

Tenacious Thinking

Keep Your Brain on Track

At the Top of the Class

Raining Thoughts

Hallways and Busy Days

Learn to the End

Always Where You Need

Office Ambience

Silence Is Golden

The Keys to the Plan

New Ideas

All Night at the Office

Work of Art

The System Is on

Study on the Move

Shake off the Workday

Dedication to the Rhythm

The Best Working Time

Integrated Approach

The Duke of New Orleans

To the Work

The Vocalist Is on

The Practical Method

A Smooth Day

Achieve It with a Tune

Different Strokes

A New Game

Success in the New Style

The New Tone

It's a Musical World