Singer Tony Kakkar, known for his tracks like 'Mohabbat Barsa De', 'Sawan Aaya Hai', 'Ek Do Teen Chaar', 'Khuda Bhi' and others, complimented 'Indian Idol 13' contestant Rishi Singh for his singing style and mesmerising renditions of 'Ek Ajnabi Hasina Se' and 'Yeh Jo Mohabbat Hai,' from the movies 'Ajnabee' and 'Kati Patang' respectively, originally sung by Kishore Kumar.