Though Porcaro From time to time assisted the band on synthesizers for their subsequent studio albums and appeared on their own 1988 tour, David Paich dealt with a lot of the live keyboard do the job, with keyboard technician John Jessel helping on selected dates from 1989 onward. Steve Lukather https://velog.io/@marchforscien/Data-Lineage-Tracking-Memantau-Aliran-Informasi-Secara-Real-Time-h8690lad