He participated in the compilation Hard-Rock Rendez-Vous (Vogue, 1989), which made him known to a wider audience, and began a French tour with Blue Öyster Cult.

), he began working with Jarre, recording the album Chronologie which led to participation in an impressive series of concerts around the world, including one at Wembley Stadium in 1993.

Other artists have crossed his path on several occasions, including Tony Mac Alpine, Simon Phillips, Steve Lukather, Stu Hamm (Cannes music passion) and Gary Moore (BBM) for whom Rondat was an opening act at the Zénith Paris, then he was invited to join Joe Satriani's G3 tour (1998) with Michael Schenker, for 14 very memorable shows.

He recorded two albums and toured Europe together with Patrice Guers (who would join Rhapsody a few years later), Dirk Bruinenberg (drummer of Elegy), Stephan Lill, and Gunter Verno (Vanden Plas).

Jean-Michel Jarre then planned new gigs in which Rondat was involved: Athens (Acropolis, 2001), Beijing (Forbidden City, 2004, Universal DVD), Monaco (Salle des étoiles, 2005) and Gdansk (Space of Freedom concert, 2005).

Upon the encounter with classical pianist Hervé N'Kaoua in 2008, a collaborative work started which required, coming from the "rock" world, discipline and humility from Rondat.

The duo, coming from apparently conflicting cultures, offered a new perspective on sonatas for piano and violin (Fauré / Beethoven), and also pieces for orchestra ("Winter", from Vivaldi's The Four Seasons).