Product Detail Generates up to four harmony parts from your voice 99 factory presets Pitch correction for keeping in tune or to create modern hard-corrected effects User button can be configured per preset for tap delay time, telephone voice, triggering Hold function and more Song mode allows you to program and step through a sequence of steps to create changing effects during songs . The "TC-Helicon VoiceLive, Floor-based 4 Voice Harmony, Compression/EQ, Pitch Correction, Microphone Preamp, Reverb, Delay, Thickening, 8 Footswitches" is best product for you. We recommended TC-Helicon VoiceLive, Floor-based 4 Voice Harmony, Compression/EQ, Pitch Correction, Microphone Preamp, Reverb, Delay, Thickening, 8 Footswitches