The yamaha sequencer is definately inferior to the PA series as all the tracks can be edited in the same way as a true worksation could whether you record using the styles ins a "one pass" type recording using the arranger to record all the parts or whether you record each part separately in the traditional workstation type way. As has already been said the songbook feature is the best function on the PA series for organising all your songs, styles etc in a logical and easy way. Way better than anything i have found on any other arranger including the ymaha.