on *:TEXT:!LyricHelp*:#Music:{
  if ($nick isreg $chan) || ($nick isvoice $chan) {
    omsg $nick is requestion Lyric Help in #music.
  }
}

I tried

on *:TEXT:!LyricHelp*:#Music:{
  if ($nick isreg $chan) || ($nick isvoice $chan) {
    omsg #music $nick is requestion Lyric Help in #music.
  }
}