Roland Portable Keyboard (BK-5) Self-contained, do-everything keyboard with auto-accompaniment engine and built-in sound system Wide selection of sounds, Music Assistants, and Rhythms that cover a wide landscape of musical genres (including East-Europe, Latin-America, Asia, and more) Friendly graphical user interface Onboard effects, including reverb, chorus, EQ, multi-band compressor, and dozens of multi-effects Music rhythm compatibility with Roland BK-7m/E-series/ G-series/VA-series instruments