Some documentation has been found for Malcourt's life. He was a singer in 1475 and 1476 in Brussels at the cathedral of Ste. Gudule, and was there again as choirmaster between 1494 and 1498; it is not clear if he was there the whole time. He received a pension from Ste. Gudule in 1513, and is mentioned as being deceased in 1519. In addition to being a singer, he was a music copyist, having copied several books of music not only for Ste Gudule but for the church of St. Niklaus, also in Brussels. The work for St. Niklaus occurred in 1486-1487. The only record of his having been a composer is the attribution to "Malcort" in a Ferrarese manuscript of the textless rondeau Malheur me bat; while this Malcort may have been Hendrick Malecourt, who was a singer in Bergen op Zoom around the same time, and worked directly with Obrecht, Abertijne Malcourt is currently considered to be the most likely candidate.