Muhammad bin Abd al-Rahman bin Yazid narrates from Sayyiduna Ibn Mas'ud (may Allah be pleased with him): "Singing makes hypocrisy grow in the heart just as water makes crops grow, and remembrance (dhikr) makes faith grow in the heart just as water makes crops grow."
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الشهادات / 21007