After four years and five albums with Weather Report and the Jaco Pastorius big band's Word of Mouth, he joined Steps Ahead.

[4] Erskine splits his time as a musician and a professor at the Thornton School of Music at the University of Southern California.

He was featured on Kate Bush's 2005 album Aerial, where Erskine teamed with bass player Eberhard Weber.

Diana Krall, Eliane Elias, Queen Latifah and Linda Ronstadt, as well as Scottish and Finnish classical orchestras, have had Erskine perform as a featured musician.

[9] Source:[12] Source:[12][13] Steps Ahead With Rez Abbasi With John Abercrombie With David Benoit With Wayne Bergeron With Warren Bernhardt With Randy Bernsen With Chris Botti With Michael Bublé With Gary Burton With Joey Calderazzo With George Cables With Alex Cline With Pino Daniele With Eddie Daniels With Yelena Eckemoff With Eliane Elias With Maynard Ferguson With Don Grolnick With Bob James With Marc Johnson With Stan Kenton With Diana Krall With Chuck Loeb With Mike Mainieri With Vince Mendoza With Al Di Meola With Bob Mintzer With Makoto Ozone With Alan Pasqua With Jaco Pastorius With John Patitucci With Lee Ritenour With John Scofield With Mike Stern With Sadao Watanabe With Weather Report With Kenny Wheeler Source:[13] With others Source:[13]