If you're looking to learn singing like Ariana Grande, you'll need to practice a lot of high-pitched singing with an emphasis on agility, mixed voice and vocal fry. Ariana is known for her exceptional control over her whistle register, which is the highest vocal register.

Here are some tips and practical advice for learning to sing like Ariana Grande:

1. Analyze Your Voice: Before you begin, assess your vocal range by using Singing Carrots' vocal range test. Knowing your vocal range will help you pick the right songs for your voice.
2. Warm Up Your Voice: Always start your practice sessions with a proper vocal warm-up. Singing Carrots' Pitch Training singing game and the Farinelli Breathing exercise videos are great for this.
3. Breathing: Once you've warmed up, focus on breath support. Good breathing technique helps with control, endurance and sound quality. Read Singing Carrots' articles on breathing basics and breath support to learn more.
4. Voice Control: Learn how to control your voice and avoid constrictions, by following the Open mouth & throat article and its tips.
5. Mixed Voice: Mixed voice is a technique that allows seamless transitions between registers in your voice. Singing Carrots offers videos on voice registers and the voice break, to help you master this skill.
6. Vibrato: It's a well-known fact that Ariana Grande incorporates a lot of vibrato into her singing style. Practice singing with vibrato using Singing Carrots' Singing with Vibrato tutorial video.
7. Articulation: Sing a lot of diction-rich and fast-paced songs to improve your articulation such as, Learning "The Way" song or Finger Bite exercise videos.
8. Chest Voice: Ariana Grande uses her chest voice a lot. Singing Carrots can help you explore this technique with its Chest Voice Explained video.
9. Stage Presence: Learn how to overcome stage fright and be a confident performer by reading Singing Carrots' articles on "Stage Fright" and "Tips for Performing on Stage."

Last but not least, Macy Gray is renowned for her unique vocal style. If you're looking to learn from her, practice her characteristic blend of heavy modal, growling, and twang techniques as shown in these exercises: How to Twang, How to Growl, and Vocal Distortion exercises respectively.

With this guide and the abundant resources offered by Singing Carrots, anyone can learn to sing like Ariana Grande and Macy Gray!