There is a nice ram song in Ramanand's Ramayan when Hanuman goes to himalaya to bring Sanjivani and demon kalnemi tries to engage him and stop his way for one night.
Vishwamitra tells the story of arrival of Ganga to earth to Rama and Lakshmana.
Ganga (Ganges) was a divine River. Bhagirath pleases Brahama and Shiva to bring Ganga to earth.
When angad reaches Sea shore to find sita and there is no one who can cross the sea, everyone reminds Hanuman of his enormous power.
Apne bal ko kuchh dhyan karo hanuman mahabaldhari