Lord Hanuman ji has many Aartis and Hymns devoted to him, which one you want ?
1) Aarti Kijye Hanumaan Lala Ki
2)Jai Hanuman Beera
3)Aaj Mangalwar hain Mahaveer Ka vaar hain
Aarti is in general hyms composed with deeds of Lord and his message.It is said that whenever wherever , if the aarti is perfomed with pure heart with Lord Rama in mind and remembering Lord Hanumans deeds , he blesses with his presence.