This is what we found on Wikipedia regarding the Myles Smith:

Myles Richard Bass (born November 27, 1969), known professionally as Myles Kennedy, is an American singer, guitarist, and songwriter. He is the lead vocalist and rhythm guitarist of the rock band Alter Bridge and of Slash featuring Myles Kennedy and the Conspirators alongside guitarist Slash. A former guitar instructor from Spokane, Washington, Kennedy has worked as a session musician and songwriter, making both studio and live appearances with several artists, and has been involved with several projects throughout his career.

Born in Boston, Massachusetts, and raised in Northern Idaho and Spokane, Kennedy attended Spokane Falls Community College to study music theory. He began his music career in 1990 as the lead guitarist of the instrumental jazz ensemble Cosmic Dust, with which he released one studio album. His second band, Citizen Swing, released two studio albums before disbanding in 1996. With fellow Citizen Swing member Craig Johnson, Kennedy founded the rock band The Mayfield Four, for which he provided lead vocals and guitar. The band released two studio albums and broke up in 2002. After declining an offer to audition as the lead vocalist of Velvet Revolver, he was asked to join Alter Bridge by Mark Tremonti in late 2003, formally joining in 2004, and he has been with the band ever since. He has released seven studio albums with Alter Bridge.

While Alter Bridge was on tour in 2008, Kennedy and former members of Led Zeppelin met and improvised as a group in an informal jam session, but the band never fully materialized. He then started working with Slash, featuring on the guitarist's 2010 eponymous solo album on two tracks and later serving as Slash's vocalist on tour. In 2012, Kennedy filled in with short notice for Guns N' Roses lead singer Axl Rose when Rose refused to show up for the band's Rock and Roll Hall of Fame induction ceremony. With Slash, Myles Kennedy and the Conspirators have recorded four studio albums. Kennedy's debut solo album, Year of the Tiger, was released in 2018, and his second solo album, The Ides of March, was released in 2021.