It's been 15 years since Bun B released his sophomore solo album, II Trill.

Following the release of his solo debut, Trill, the album, which debuted at number two on the Billboard 200, came during a time of mourning after the tragic death of his longtime friend and UGK partner-in-rhyme, Pimp C in 2007. It also arrived shortly before Barack Obama became the country's first Black president, and to that end, finds Bun dipping further into socio-political themes.

Of course, mostly II Trill, continues to showcase Bun's dynamic lyricism and the charisma, which have made him one of the most respected lyricists in rap.

Check out three memorable moments from the album.

Whenever Bun declares his love for the south.

The most notable example of Bun's love for his southern roots on this project comes early on via "You're Everything" produced by veteran beatsmith, Mr. Lee. Over a sample from Jodeci's "Cry For You," Bun opens the song with a strong verse, and leaves the rest of the track to his southern peers, 8Ball & MJG, David Banner, and Rick Ross, to drive the point home.

Southern beatsmiths Jazze Pha, Cory Mo, Mr. Lee, and more all show up to offer production on the 18-track project, while Juvenile, Lil Wayne and more offer verses, showcasing Bun's commitment to the sound he helped cultivate with previous albums.

Bun's tributes to Pimp C.

Pimp's unexpected death rocked Hip-Hop, and Bun declared his love for his friend right from the start of the album when on "II Trill" J. Prince's opens the song with, "What's up Pimp, I feel your presence right now." The tone for the rest of the album is immediately set.

Bun's most emotive offering comes on "Angel In The Sky" which borrows from Stevie Wonder's "Ribbon In the Sky."

"I love my brother Pimp C and man I miss him every day/Yeah my heart still hurts (hurts) and the pain's still fresh (fresh)/But I'mma put God first, to keep that pressure off my chest..."

When Pimp C shows up on "Underground Thang."

On "Pop It 4 Pimp" Webbie and Juvenile show up to offer love to Pimp, who's presence is felt throughout the project. On "Underground Thang," featuring production from fellow Houston native and longtime collaborator Cory Mo, Bun is in top lyrical form, while Chamillionaire shows up with his signature raspy sing-songy drawl. Pimp makes a posthumous appearance as well, paying homage to his friend, who held him down during his three year stint, from 2002-2005.

"I did four in population with a ball-faced bitch/If it wasn't for that Bun, niggas might not know my name no more/But every time they gave him a mic, he told them hoes to let me go..."

II Trill remains a bright spot in Bun's discography.