After spending a few night in a beautiful old castle near Brussels at the start of 2021 (following lockdown), Belgian art-poppers Balthazar returned from their stay with Sand Castle Tapes, a documentary and live concert filmed by Heleen Declercq and co-produced with HolyShit sessions. 'They released Sand Castle Tapes' as a digital EP on 24th September 2021, featuring ten songs from the film; eight songs reworked from the album and two jams. On 29th April, Balthazar will release 'Sand Castle Tapes' for the first time in physical format as a single LP.