BEAD TUNED BASS BOOMERS Tuning a 4 String Bass BEAD (or, the lower 4 strings of a 5 string bass) is not a new development. However, players had to either purchase strings separately or a 5 string set and throw away the G string to be able to do this. With the BEAD Tuned Bass Boomers sets from GHS Strings, players can now buy the exact sets they want without the previous hassle. WARNING: These sets are optimized for BEAD tuning on a 4 string bass. Do NOT attempt to tune these sets up to standard EADG tuning.