Beatmania III: Append 7thMix - keepin' Evolution is a rhythm game developed by Konami. It is the fourth game in the beatmania III series, a spin-off of the beatmania series. It is part of the BEMANI franchise.

The game is played with a controller with one turn table, one foot pedal and 5 keys, three white and two black. On the screen you will see bars moving from the top to bottom in columns representing each of the keys, foot pedal and the turntable. When the bars reach the judgement line it is time to hit the key or scratch.

Introduces 1-Turn scratches to the beatmania III series. Unlike beatmania 7thMIX where the Single and Double charts have separate rating, here it remain the same.

As with the other APPEND titles, the songlist is mainly focused on brining over songs from beatmania 7thMIX. 32 songs were brought over and 6 song got LONG versions. 188 songs return from the previous entry in the series. The song list has a total of 225 songs.