Allah has not heard anything (more pleasing) than listening to the Prophet reciting the Qur'an in a sweet loud voice. (Using translation from Muslim 793b)
قَالَ رَسُولُ اللَّهِ ﷺ «مَا أَذِنَ اللَّهُ لِشَيْءٍ كَإِذْنِهِ لِنَبِيٍّ يَتَغَنَّى بِالْقُرْآنِ يَجْهَرُ بِهِ»