Please read the following table in Markdown format and then answer the question according to the table. Table cells in one row are seperated by '|', and different rows are seperated by '
'.

Table:
| Track no. | Track | Original Artist | Soloist(s) | Vocal Percussionist | Arranger(s) |
| --- | --- | --- | --- | --- | --- |
| 1.0 | Does Your Mother Know | ABBA | Nick Barstow | Danny Swift | Alexei Kalveks |
| 2.0 | In My Head | Jason_Derülo | Ollie Stephenson, Chris Bland | Alexei Kalveks | Alexei Kalveks |
| 3.0 | Beautiful Day / Firework | U2 / Katy Perry | Dave Brennan, James Kay, Laurie Cottam | Alexei Kalveks and Dave Brennan | Nick Barstow |
| 4.0 | No Diggity | Blackstreet | Nick Fletcher, Selali Fiamanya, Dave Brennan | Samuel Swinnterton | Ben Woodgates |
| 5.0 | Mustang Sally | Wilson Pickett | Danny Swift | Ollie Stephenson | Ben Woodgates |
| 6.0 | She's Always A Woman | Billy Joel | Alexei Kalveks | unknown | Alexei Kalveks |
Question:
Who is the arranger when the vocal percussionist is Alexei Kalveks and Dave Brennan?
Answer:
Nick Barstow