BOSS SP-555
Owner's Manual

Playing samples and recording your performance (Pattern Sequencer) 15. Press the pads at the desired timing.
During recording, you can use the pads to play samples. You can also press a bank button to switch sample banks. The samples of the pads you pressed will play, and will be recorded at the timing specified by the selected quantize setting. When the measure number shown in the display reaches the pattern length you specified, you will automatically return to measure one, and recording will continue (�loop recording�). The previously recorded performance will play back during this time. If you press [SAMPLING] once again so the button is blinking, the display will indicate �rEH� and you�ll be in Rehearsal mode. In this state, pressing the pads will play the corresponding samples, but they won�t be recorded. When you press [SAMPLING] once again so the button is lit, you�ll exit Rehearsal mode and return to the conventional recording mode. This gives you a convenient way to find the next sample that you want to play.

Erasing a mistake from your performance
If you�ve played a sample by mistake while recording, you can use the corresponding pad to erase it from the recorded pattern.

1. Press [PATTERN SELECT] so the button is lit.
The display will indicate �Ptn� and pads to which a pattern is assigned will blink.

2. Press [SAMPLING] so the button is lit. 3. Press the pad for the pattern containing the
performance from which you want to delete the mistake. The pad you pressed will light, and the other pads will go out. [SAMPLING] will blink, and the metronome will begin sounding.

4. Press [SAMPLING].
[SAMPLING] will change from blinking to lit, and recording will begin. The recorded performance will play back. If you press the pad of a sample at this time, it will be recorded.

16. Press the pads of samples that you want to overdub.
The pad performance that you recorded on the previous pass will be recorded along with your newly added pad performance (overdubbed). You can use this method to gradually build up complex rhythms that would be impossible to play all at once. During this recording process, you can change the quantization as follows. 1. Press [QUANTIZE] so the button is lit. 2. Turn the CTRL 3 knob to change the quantize setting. 3. When you�ve made the desired setting, press [QUANTIZE] to extinguish the button. The new quantize setting will be applied immediately.

5. Press [DEL] so the button is lit.
The display will indicate �ErS.�

6. Press the pad for the sample that you want to erase,
throughout the period where you want the erasure to take place. The dot in the display will blink, and any occurrences of that sample will be erased from the pattern during the duration that you hold down the pad.
By holding down [HOLD] you can erase the performances of all pads.

17. When you want to stop recording, press [CANCEL].
The dot in the display will blink. When the blinking stops, recording is complete.
Never turn off the power while the dot is blinking. Doing so may destroy not only the pattern you recorded, but also other patterns or the CompactFlash card.

7. Repeat step 6 as desired. 8. When you�ve finished erasing mistakes, press [DEL].
[DEL] will go out, and the pattern will return to normal recording.
If you press the pad of a sample at this time, it will be recorded.

9. Press [CANCEL] to carry out the erasure.
The dot in the display will blink while the erasure is being carried out. When the blinking stops, the erasure is complete.
Never turn off the power while the dot is blinking. Doing so may destroy not only the pattern you recorded, but also other patterns or the CompactFlash card.

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