Complex sentence: Released exclusively in physical format, "M-tp M-TP" as a box set carried an USB flash drive containing the album tracks, where most made their first physical appearances as they were previously available digital-only.
Split into simpler sentences: Released exclusively in physical format, "M-tp M-TP" as a box set carried an USB flash drive containing the album tracks. Most of the songs made their first physical appearances as they were previously available digital-only.