For those into Hammond B-3 style organ, you can program custom registrations.
From the manual:
The P-150 is a high-performance electronic piano with full-scale, weighted action keyboard, a selection of high quality piano and other useful instrument voices, and versatile performance and other advanced features which make it ideal for professional stage and studio applications, as well as for home entertainment and music study use. The P150's main features include: s Dual and Split voice modes The P-150's Dual and Split modes let you play two voices at once, a "main" voice and a "sub" voice, either by layering the two voices of your choice (Dual mode) or by assigning a different voice to each end of the keyboard (Split mode). In Split mode, the key transposition values can be set independently for both main and sub voices. s One-touch Performance recall The P-150 features a Performance Play mode that lets you store up to 24 Performances, or configurations of all voice, MIDI and other parameter settings, for recall at the touch of a button. This lets you instantly change your sound and entire setup as you play, or between songs in a live set. The P-150 is set at the factory with 24 Preset Performances, but you can overwrite them and store User Performances which you create yourself. The P150 features extensive editing and storing capabilities. s High quality AWM piano and other sounds The P-150 features a selection of twelve high quality instrument voices generated by Yamaha's patented AWM (Advanced Wave Memory) sound generation technology. There are several piano sounds-including a concert grand piano, with full-bodied bass tones and reverberating high notes, that accurately captures the natural characteristics of a real grand piano-plus various electric pianos, vibes, organ combinations, strings and electric and upright bass. With a maximum simultaneous "polyphonic" note output of 32 notes, the P-150 delivers uncompromising performance capabilities. s Master keyboard features The P-150 offers many of the control features standard in a MIDI master keyboard, including velocity sensitivity, pitch bend and modulation wheels, an assignable CS (continuous slider), program change send and receive capabilities, MIDI transpose and merge functions, and bulk dumping and multitimbral capabilities.