Keep Grinding

Playing Rhythm Games Without Their Controllers

Beatmania

Use a keyboard. DualShock controllers aren't ergonomical on difficult notecharts.

DanceDanceRevolution and Pump It Up

A DualShock controller suits these games if jumping annoys your neighbors.

Donkey Konga and Taiko no Tatsujin

You can actually spam inputs faster without bongos or a drum (lol).

DrumMania

The gameplay fits DualShock controllers perfectly.

Pop'n Music

I usually map all of the buttons to a keyboard. A Dreamcast or DualShock controller will drive you bonkers in 9-button mode.