Complex sentence: In 2017, Hill celebrated 55 years as a solo recording artist and to mark this occasion Parlophone, Sony Music, Cherry Red Records, BMG, President Records and Demon Music Group re-issued much of Hill's music from the 1960s to the 1990s.
Split into simpler sentences: In 2017, Hill celebrated 55 years as a solo recording artist. To mark this occasion British record labels Parlophone, Sony Music, Cherry Red Records, BMG, President Records and Demon Music Group re-issued much of Hill's music from the 1960s to the 1990s.