James Arthur and Ty Dolla $ign are two vocalists who have proven successful in their respective genres. Combining their talents for the song "Treehouse," these two artists demonstrate unique vocal techniques that aspiring singers can learn from.

Firstly, James Arthur has a very distinctive vocal tone characterized by his ability to mix his belt and headvoice, making for a unique sound. Additionally, his penchant for soulful adlibs, particularly in his runs, enhances the emotional expressiveness in his music. Ty Dolla $ign, on the other hand, is considered a leading figure in the resurgence of R&B music. He is known for his ability to blend singing and rapping seamlessly, resulting in a new style that has captivated audiences worldwide.

To learn how to sing like James Arthur, vocalists should focus on mixing their belt and head voices. A great way to start developing this skill is through the pitch training exercises available on Singing Carrots website. Additionally, to emulate his expressive runs, it is essential to practice vocal agility regularly. Try some of the pitch training resources to enhance your range and agility, and then gradually add a playful twist to your vocal runs. The pitch-training game in Singing Carrots is a fantastic resource to make practicing runs enjoyable.

For Ty Dolla $ign's fans, it's crucial to start working on incorporating a rap-like delivery into their singing. Chest voice dominance is also crucial due to having a relatively low-ranged voice. Vocalists can learn how to place their voice in a more "rappy" manner with artists like Ty Dolla $ign and vocal techniques such as Twang, Belting, and Heavy Modal. Singing Carrots have helped in that area with videos such as 'How to Twang exercise' and 'Contemporary vocal techniques: Heavy modal, Twang, Belting.'

Finally, to learn how to sing "Treehouse," making full use of the breath support techniques demonstrated in Farinelli Breathing, and breathing basics offered in Singing Carrots resources, is essential.

In conclusion, James Arthur and Ty Dolla $ign both offer unique vocal styles that vocalists practicing singing should strive to learn. By incorporating both artists' techniques, singers can create a unique singing style of their own, highlighted in resources such as those found at Singing Carrots.