Complex sentence: In 1998, Hungate rejoined his former TOTO bandmates in Europe for a series of live shows promoting Toto XX: 1977--1997, an archive release of previously unreleased studio & live songs.
Split into simpler sentences: In 1998, Hungate rejoined his former TOTO bandmates in Europe for a series of live shows promoting Toto XX: 1977--1997. An archive release of previously unreleased studio & live songs.