evlâdım: my child (older people address younger ones this way)
Allah zihin açıklığı versin: may God give you clarity of mind (said to students or others studying or taking exams, etc.)
ara sıra: from time to time
yok: there isn't, does not have
kurs: course [lessons] (in Turkey, many young people take private lessons after school to prepare for college entrance exams)
ne demişler: what do they say
moral olmak: to boost one's morale
müzik ruhun gıdası: music is food for the soul