her concert on 31 July 2015 were included in the video. The music videos were released on 15 September 2014 and 17 August 2015 respectively. Additionally, a remixed version of "Naber" was prepared by French DJ David Vendetta. This remix was released as a single on 28 October 2014. "Naber" also became the fourth most-searched song on Google in Turkey in 2014. Sebastian + Mükemmel Yener was featured on Berksan's single "Haberi Var mı?", which was released in September. She also performed the songs "Sebastian" and "Eve Nasıl Geldim" for Volga Tamöz's album No. 2, which was released in March 2015. "Sebastian" ranked first on Turkey's official music charts for three consecutive weeks. On 27 April 2015, the song "Haberi Var mı?" together with Yener's two songs from Tamöz's album were released together with Mükemmel under a three-disc edition titled Sebastian + Mükemmel. Additionally, many of the songs in Mükemmel were again released on 4 December 2015 in a compilation album titled İki Deli. Track listing Personnel Hande Yener – main vocals, songwriter, backing vocals, supervisor, fx vocals Altan Çetin – songwriter, composer, backing vocals Berksan – songwriter, composer, fx vocals Mert Ekren – songwriter, composer, bass guitar Volga Tamöz – composer, arranger, moxing, fx vocals, backing vocals Turaç Berkay Özer – composer, clavier Yıldırım Türker – songwriter Onno Tunç – composer Fikret Şeneş – songwriter Peter Yellowstone – composer Steven John Voice – composer Emrah Karaduman – arranger, backing vocals, intro melody, mixing Polat Yağcı – producer Caner Güneysu – classic guitar, acoustic guitar Gültekin Kaçar – acoustic guitar, electro guitar Birkan Şener – bass gitar Martin Gusty – guitar Gündem Yaylı Grubu – bowed string instruments İstanbul Strings – yaylılar William Richart Cardoso Gonzales – percussion Cengiz Ercümer – percussion Eyüp Hamiş – ney Ertan Tekin – balaban Şenol Arkın – cello Ali Yılmaz – acoustic bağlama Gürtuğ Gök – tenor, soprano saxophone Işık Üstündağ – tenor trombone Mert Can Oktav – trumpet Tufan Taş – recording, arrangement, mixing Utku Ünsal – recording Ümit Kuzer – recording Tarık Ceran – mixing, mastering Emre Kıral – mixing, mastering Miles Showell (Abbey Road Studios) – mastering Mert Hakan – arranger Cihat Uğurel – arranger Çağın Kulaçoğlu – arranger Nurettin Çolak – arranger Levent Lodos – arranger Kaan Gökman – arranger Cemre Burak – arranger Barış Mert Peker – arranger Selim Akar – brand, PR Tayfun Çetinkaya – photographs Credits adapted