Of the oldest printed song-book in the Netherlands: Dit is een suuerlijc boecxken (SB), six editions have been known still to exist. Four editions of SB appeared under this title: one published by A. van Berghen at Antwerp in 1508, one by W. Vorsterman also at Antwerp in 1540, and two undated ones - probably late 16th-century - by H.J. Muller at Amsterdam. Two other editions, equally undated but probably also late 16th-century were published under the title: Dit is een schoon suyverlyck Boecxken (SSB) by Th. Baert at Antwerp (Alkmaar?) and C. Claesz at Am-sterdam respectively (approbations of 17.11.1570). Of each of these editions there are provided a photograph of the title-page, the collation, a depository with classification number, and the main bibli-ography. To the above-mentioned editions a completely unknown 16th-century edition has now been added: Dit is een suyuerlijck boecxken, published by Jan II van Ghelen at Antwerp in 1565. This collection comprises 58 spiritual songs, 23 of which have an air indication, and 48 of which had already appeared in print before 1565.